/learnedt1w/ Recent content in LearnedT1Ws on Sam's Blog Hugo -- gohugo.io en Sat, 04 Apr 2026 00:00:00 +0000 /learnedt1w/2026/04_04_2026/ Sat, 04 Apr 2026 00:00:00 +0000 /learnedt1w/2026/04_04_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://github.com/gumyr/build123d">Python cad library</a></p> <p><a href="https://jaso1024.com/mvidia/">Build a GPU</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://youtu.be/QpO63kVjFb0">Pallet camper</a></p> <p><a href="https://kathmandupost.com/money/2026/03/27/inside-nepal-s-fake-rescue-racket">Rescue fraud</a></p> <p><a href="https://climate.benjames.io/fusion/">Fun fusion overview</a></p> <p><a href="https://www.youtube.com/watch?v=IjdZ846OcGI">Poker lecture at Harvard</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://github.com/gumyr/build123d">Python cad library</a></p> <p><a href="https://jaso1024.com/mvidia/">Build a GPU</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://youtu.be/QpO63kVjFb0">Pallet camper</a></p> <p><a href="https://kathmandupost.com/money/2026/03/27/inside-nepal-s-fake-rescue-racket">Rescue fraud</a></p> <p><a href="https://climate.benjames.io/fusion/">Fun fusion overview</a></p> <p><a href="https://www.youtube.com/watch?v=IjdZ846OcGI">Poker lecture at Harvard</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2026/03_28_2026/ Sat, 28 Mar 2026 00:00:00 +0000 /learnedt1w/2026/03_28_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.cs.utexas.edu/~EWD/transcriptions/EWD08xx/EWD867.html">Alan M. Turing allowed himself to be drawn into the discussion of the question whether computers can think. The question is just as relevant and just as meaningful as the question whether submarines can swim.</a></p> <p><a href="https://youtu.be/ldxFjLJ3rVY?si=JtCW0D6ED-0LCdyx">The goat</a></p> <p>Copy all rendered html <code>copy(document.documentElement.outerHTML)</code></p> <p><a href="https://www.ilograph.com/blog/posts/more-common-diagram-mistakes/">Common Design Diagram Mistakes</a></p> <p><a href="https://www.john-rush.com/posts/eggs-25-years-20260219.html">Eggs… and high token cost</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://open.substack.com/pub/astralcodexten/p/being-john-rawls?r=7lm0ev&amp;utm_medium=ios">John Rawls</a></p> <p><a href="https://youtu.be/roJtSrDIJ1w">18p hard lemonade</a></p> <p><a href="https://www.dayuse.com">Hotels but only during the day</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.cs.utexas.edu/~EWD/transcriptions/EWD08xx/EWD867.html">Alan M. Turing allowed himself to be drawn into the discussion of the question whether computers can think. The question is just as relevant and just as meaningful as the question whether submarines can swim.</a></p> <p><a href="https://youtu.be/ldxFjLJ3rVY?si=JtCW0D6ED-0LCdyx">The goat</a></p> <p>Copy all rendered html <code>copy(document.documentElement.outerHTML)</code></p> <p><a href="https://www.ilograph.com/blog/posts/more-common-diagram-mistakes/">Common Design Diagram Mistakes</a></p> <p><a href="https://www.john-rush.com/posts/eggs-25-years-20260219.html">Eggs… and high token cost</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://open.substack.com/pub/astralcodexten/p/being-john-rawls?r=7lm0ev&amp;utm_medium=ios">John Rawls</a></p> <p><a href="https://youtu.be/roJtSrDIJ1w">18p hard lemonade</a></p> <p><a href="https://www.dayuse.com">Hotels but only during the day</a></p> <p><a href="https://youtu.be/_20LePuDHJo">Building a garden</a></p> <p><a href="https://youtu.be/sxGoHjoFH9I">Stop over paying for vanilla extract</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Successfully dehydrated some fruit this week.</p> <ul> <li><a href="https://www.freshoffthegrid.com/diy-fruit-leathers/">https://www.freshoffthegrid.com/diy-fruit-leathers/</a></li> <li><a href="https://eatsleepwild.com/homemade-dehydrated-backpacking-meals/">https://eatsleepwild.com/homemade-dehydrated-backpacking-meals/</a> <ul> <li><a href="https://www.amazon.com/mylar-bags/s?k=mylar&#43;bags">https://www.amazon.com/mylar-bags/s?k=mylar+bags</a></li> <li>100PCS Silica Gel Packets</li> </ul> </li> </ul> /learnedt1w/2026/03_21_2026/ Sat, 21 Mar 2026 00:00:00 +0000 /learnedt1w/2026/03_21_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://jerinsunny.github.io/stm32_vglitch/">Voltage glitching</a></p> <p><a href="https://aws.amazon.com/about-aws/whats-new/2026/03/amazon-redshift-increases-performance-for-new-queries/">7x better because “composition”</a></p> <p><a href="https://en.wikipedia.org/wiki/Bellman_equation">Bellman equation</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://suno.com/home">Suno AI music&hellip;</a></p> <p><a href="https://waymo.com/safety/impact/">Autonomous driving might have the biggest positive impact on the world this decade</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://finnian.io/blog/home-assistant-waters-my-plants/">Plant watering:</a></p> <p><a href="https://www.youtube.com/watch?v=T4Upf_B9RLQ">Making things shitty</a></p> <p><a href="https://www.slu.edu/about/key-facts/what-is-a-billiken.php">Billiken</a></p> <p><a href="https://onetrillionbrackets.com/how-it-works">One Trillion brackets</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.goodreads.com/quotes/274551-it-ought-to-be-remembered-that-there-is-nothing-more">&ldquo;the innovator has for enemies all those who have done well under the old conditions, and lukewarm defenders in those who may do well under the new.&rdquo;</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://jerinsunny.github.io/stm32_vglitch/">Voltage glitching</a></p> <p><a href="https://aws.amazon.com/about-aws/whats-new/2026/03/amazon-redshift-increases-performance-for-new-queries/">7x better because “composition”</a></p> <p><a href="https://en.wikipedia.org/wiki/Bellman_equation">Bellman equation</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://suno.com/home">Suno AI music&hellip;</a></p> <p><a href="https://waymo.com/safety/impact/">Autonomous driving might have the biggest positive impact on the world this decade</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://finnian.io/blog/home-assistant-waters-my-plants/">Plant watering:</a></p> <p><a href="https://www.youtube.com/watch?v=T4Upf_B9RLQ">Making things shitty</a></p> <p><a href="https://www.slu.edu/about/key-facts/what-is-a-billiken.php">Billiken</a></p> <p><a href="https://onetrillionbrackets.com/how-it-works">One Trillion brackets</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.goodreads.com/quotes/274551-it-ought-to-be-remembered-that-there-is-nothing-more">&ldquo;the innovator has for enemies all those who have done well under the old conditions, and lukewarm defenders in those who may do well under the new.&rdquo;</a></p> /learnedt1w/2026/03_14_2026/ Sat, 14 Mar 2026 00:00:00 +0000 /learnedt1w/2026/03_14_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.sqlite.org/optoverview.html#the_skip_scan_optimi">SQLite skip scan</a></p> <p><a href="https://www.marginalia.nu/weird-ai-crap/hn/">Dead internet arrival</a></p> <p><a href="https://onecloudplease.com/blog/bucketsquatting-is-finally-dead">Namespace prevents bucket squatting</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://youtu.be/THAupOYwJTs">Wow, 21 years off grid</a></p> <p><a href="https://clackernews.com/">Clacker news</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=Bx-v_cWYmkQ">Doom</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.sqlite.org/optoverview.html#the_skip_scan_optimi">SQLite skip scan</a></p> <p><a href="https://www.marginalia.nu/weird-ai-crap/hn/">Dead internet arrival</a></p> <p><a href="https://onecloudplease.com/blog/bucketsquatting-is-finally-dead">Namespace prevents bucket squatting</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://youtu.be/THAupOYwJTs">Wow, 21 years off grid</a></p> <p><a href="https://clackernews.com/">Clacker news</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=Bx-v_cWYmkQ">Doom</a></p> /learnedt1w/2026/03_07_2026/ Sat, 07 Mar 2026 00:00:00 +0000 /learnedt1w/2026/03_07_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>I did not know that appending a shell command with <code>&amp;</code> runs it asynchronously. You can view running things with <code>jobs</code>.</p> <p><code>nc ip port</code> to send a message to a port, <code>nc -lv port</code> to listen to it.</p> <p><code>yes</code> just pipes y to stdout over and over</p> <p><code>pstree</code> for viewing process tree on Linux (all starts from systemd)</p> <p><code>powermetrics</code> is useful for cpu/process info.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>I did not know that appending a shell command with <code>&amp;</code> runs it asynchronously. You can view running things with <code>jobs</code>.</p> <p><code>nc ip port</code> to send a message to a port, <code>nc -lv port</code> to listen to it.</p> <p><code>yes</code> just pipes y to stdout over and over</p> <p><code>pstree</code> for viewing process tree on Linux (all starts from systemd)</p> <p><code>powermetrics</code> is useful for cpu/process info.</p> <p><a href="https://johnnyreilly.com/image-optimisation-tinypng-api">TinyPNG’s</a></p> <p><a href="https://josephg.com/blog/crdts-are-the-future/">Conflict free replicated data types</a></p> <p><a href="https://lighthousesoftware.co.uk/projects/from-noise-to-image/">Visual walkthrough of diffusion models</a>xs</p> <p><a href="https://vondra.me">Good Postgres blog</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.experimental-history.com/p/the-one-science-reform-we-can-all">Rent seeking in science</a></p> <p><a href="https://conway.tech/">“AI Pays for itself”</a> first prompt: connect wallet&hellip;</p> <p><a href="https://x.com/JeremiahDJohns/status/2029590438504493156?s=20">US imports more from Taiwan than china now</a></p> <p><a href="https://truthonthemarket.com/2026/02/12/baby-chicks-gas-lines-and-the-war-on-prices/">Price controls suppress the mechanism that prevents chaos, and the resulting chaos invites still more control, creating an escalating cycle the price system would have prevented from starting.</a></p> <p><a href="https://open.spotify.com/episode/4UnXOptNAMLfSnM3KGd7ww?si=H2OmEQOsSyK0Y3zuae9j6A&amp;t=3370&amp;pi=czyiYVx1SfCD8">Culture is those behaviors that employees believe will be rewarded.</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://spinnakerchocolate.com/pages/visit-us">Spinnaker Cool place ot visit and make chocolate</a></p> <p><a href="https://www.ciggies.app/">Cig app with a great UI</a></p> <p><a href="https://en.wikipedia.org/wiki/G._K._Chesterton">GK chesterton</a></p> <p><a href="https://gwern.net/doc/fiction/science-fiction/2012-10-03-yvain-thewhisperingearring.html">The whispering earring</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=4K9RDZg4y7o">Wild Shia LaBeouf Interview</a></p> <p><a href="https://youtu.be/eXi4xHj4SfU?si=wZth5vrEaLyFCdNv">The 2026 Barkley</a></p> /learnedt1w/2026/02_28_2026/ Sat, 28 Feb 2026 00:00:00 +0000 /learnedt1w/2026/02_28_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://youtu.be/NGFhc8R_uO4?si=h7dy6joLfgQlXI7q">One step from magic</a></p> <p><a href="https://www.calebleak.com/posts/dog-game/">the bottleneck in AI-assisted development isn’t the quality of your ideas - it’s the quality of your feedback loops.</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://en.wikipedia.org/wiki/Productivity_paradox">Why isn&rsquo;t GDP growing faster?????</a></p> <p><a href="https://eventwaves.substack.com/p/kpmg-audited-companies-are-trading">Insider trading pt 1000</a></p> <p><a href="https://www.wired.com/story/openai-fires-employee-insider-trading-polymarket-kalshi/">Insider trading part 1001</a></p> <p><a href="https://open.spotify.com/episode/2Fs0gI2bl22ApmwsLuWkZB?si=h928r68ORu-ryKfDoWAbhQ&amp;t=2020&amp;pi=5LGhg1G6SdaJU">Levered single stock etfs</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.barstoolsports.com/blog/3563784/gavin-mckenna-knocked-a-guy-out-at-a-bar-got-charges-dropped-then-hit-the-on">The best college hockey player</a></p> <p><a href="https://en.wikipedia.org/wiki/Medicine_Hat_Tigers">My new favorite hickey team name</a></p> <p><a href="https://youtu.be/qKta3RPyLIo?si=P7ZEERBuh_VAZTsm">Obree</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://nowigetit.us">Distill scientific papers</a></p> <p><a href="https://en.wikipedia.org/wiki/Jeonse">wild way to pay rent</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://youtu.be/NGFhc8R_uO4?si=h7dy6joLfgQlXI7q">One step from magic</a></p> <p><a href="https://www.calebleak.com/posts/dog-game/">the bottleneck in AI-assisted development isn’t the quality of your ideas - it’s the quality of your feedback loops.</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://en.wikipedia.org/wiki/Productivity_paradox">Why isn&rsquo;t GDP growing faster?????</a></p> <p><a href="https://eventwaves.substack.com/p/kpmg-audited-companies-are-trading">Insider trading pt 1000</a></p> <p><a href="https://www.wired.com/story/openai-fires-employee-insider-trading-polymarket-kalshi/">Insider trading part 1001</a></p> <p><a href="https://open.spotify.com/episode/2Fs0gI2bl22ApmwsLuWkZB?si=h928r68ORu-ryKfDoWAbhQ&amp;t=2020&amp;pi=5LGhg1G6SdaJU">Levered single stock etfs</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.barstoolsports.com/blog/3563784/gavin-mckenna-knocked-a-guy-out-at-a-bar-got-charges-dropped-then-hit-the-on">The best college hockey player</a></p> <p><a href="https://en.wikipedia.org/wiki/Medicine_Hat_Tigers">My new favorite hickey team name</a></p> <p><a href="https://youtu.be/qKta3RPyLIo?si=P7ZEERBuh_VAZTsm">Obree</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://nowigetit.us">Distill scientific papers</a></p> <p><a href="https://en.wikipedia.org/wiki/Jeonse">wild way to pay rent</a></p> /learnedt1w/2026/02_21_2026/ Sat, 21 Feb 2026 00:00:00 +0000 /learnedt1w/2026/02_21_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://x.com/thdxr/status/2022574719694758147">your org rarely has good ideas. ideas being expensive to implement was actually helping</a></p> <p><a href="https://en.wikipedia.org/wiki/2014_Sony_Pictures_hack">Sony pictures hack</a></p> <p><a href="https://www.marginalia.nu/log/a_132_ai_bores/">The &ldquo;AI makes people boring.&rdquo; Thesis</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://x.com/simongerman600/status/2024076532444962865/photo/1">Belarus likes to drink</a></p> <p><a href="https://en.wiktionary.org/wiki/bastonade#English">A new word I learned</a></p> <p><a href="https://youtu.be/AxqS66ZHG0k?si=hRkm72pZBobx6P0g">Ski ballet</a></p> <p><a href="https://youtu.be/iNGClJV92h8?si=0u6j6xaKqct6zShp">AI proof business? 2 Rubiks Cubes 2 Cig 2 Beer</a></p> <p><a href="https://www.youtube.com/watch?v=UBVlL0FNbSE">Lasers</a></p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://en.wikipedia.org/wiki/Jensen%27s_inequality">Jensen&rsquo;s inequality, I&rsquo;d like to write an article about this one</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.theguardian.com/sport/2026/feb/06/penisgate-winter-olympics-ski-jumpers-acid-penis-health-risks-explainer">Penis injections&hellip;</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://x.com/thdxr/status/2022574719694758147">your org rarely has good ideas. ideas being expensive to implement was actually helping</a></p> <p><a href="https://en.wikipedia.org/wiki/2014_Sony_Pictures_hack">Sony pictures hack</a></p> <p><a href="https://www.marginalia.nu/log/a_132_ai_bores/">The &ldquo;AI makes people boring.&rdquo; Thesis</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://x.com/simongerman600/status/2024076532444962865/photo/1">Belarus likes to drink</a></p> <p><a href="https://en.wiktionary.org/wiki/bastonade#English">A new word I learned</a></p> <p><a href="https://youtu.be/AxqS66ZHG0k?si=hRkm72pZBobx6P0g">Ski ballet</a></p> <p><a href="https://youtu.be/iNGClJV92h8?si=0u6j6xaKqct6zShp">AI proof business? 2 Rubiks Cubes 2 Cig 2 Beer</a></p> <p><a href="https://www.youtube.com/watch?v=UBVlL0FNbSE">Lasers</a></p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://en.wikipedia.org/wiki/Jensen%27s_inequality">Jensen&rsquo;s inequality, I&rsquo;d like to write an article about this one</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.theguardian.com/sport/2026/feb/06/penisgate-winter-olympics-ski-jumpers-acid-penis-health-risks-explainer">Penis injections&hellip;</a></p> /learnedt1w/2026/02_14_2026/ Sat, 14 Feb 2026 00:00:00 +0000 /learnedt1w/2026/02_14_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://dune.com/filarm/polymarket-activity">Nice overview of PolyMarket activity</a></p> <p><a href="https://railway.com">Another interesting &ldquo;deploy software here&rdquo; business</a></p> <p><a href="https://www.makingsoftware.com/chapters/how-is-data-stored">Amazing website, good content as well - how is data stored</a></p> <p><a href="https://www.seangoedecke.com/fast-llm-inference/">Fast LLM inference, we&rsquo;re going to get model on a chip soon</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.nber.org/papers/w34790">The Economic Impact of Mass Deportations</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://x.com/Polymarket/status/2015290042814476541">Paddy lost</a></p> <p><a href="https://www.instructables.com/DIY-Super-Noise-Canceling-Headphones/">DIY noise canceling headphones</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>I feel like long Fishing line makes for a good analogy for complexity as project grows in size (both scope # or people). If you have a foot of fishing line it&rsquo;s easy to deal with you know where both ends are at all times. If you have 250 yards, even simple issues can become infinitely complex and you just end up cutting line and starting over.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://dune.com/filarm/polymarket-activity">Nice overview of PolyMarket activity</a></p> <p><a href="https://railway.com">Another interesting &ldquo;deploy software here&rdquo; business</a></p> <p><a href="https://www.makingsoftware.com/chapters/how-is-data-stored">Amazing website, good content as well - how is data stored</a></p> <p><a href="https://www.seangoedecke.com/fast-llm-inference/">Fast LLM inference, we&rsquo;re going to get model on a chip soon</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.nber.org/papers/w34790">The Economic Impact of Mass Deportations</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://x.com/Polymarket/status/2015290042814476541">Paddy lost</a></p> <p><a href="https://www.instructables.com/DIY-Super-Noise-Canceling-Headphones/">DIY noise canceling headphones</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>I feel like long Fishing line makes for a good analogy for complexity as project grows in size (both scope # or people). If you have a foot of fishing line it&rsquo;s easy to deal with you know where both ends are at all times. If you have 250 yards, even simple issues can become infinitely complex and you just end up cutting line and starting over.</p> /learnedt1w/2026/02_07_2026/ Sat, 07 Feb 2026 00:00:00 +0000 /learnedt1w/2026/02_07_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.youtube.com/watch?v=qjWkNZ0SXfo">3D engine</a></p> <p><a href="https://www.youtube.com/watch?v=uRGljemfwUE">The Website is down</a></p> <p><a href="https://surfingcomplexity.blog/2026/02/08/nobody-knows-how-the-whole-system-works/">Nobody knows how the whole system works</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://databento.com/microstructure/sub-penny-rule">Good overview of sub penny rule</a></p> <p><a href="https://www.simonberens.com/p/lessons-learned-shipping-500-units">Physical products are&hellip; difficult</a></p> <p><a href="https://www.cnbc.com/amp/2026/02/07/south-korean-crypto-firm-accidentally-sends-out-44-billion-in-bitcoin.html">Oops</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://fredbenenson.com/blog/2026/02/03/221-cannon-is-not-for-sale/">Vacant land fraud</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.tenkarabum.com/">The Tenkara bum blog</a></p> <p>Places to fish:</p> <ul> <li>Willow springs creek hike behind the dam</li> <li>Canyon creek, passed woods canyon</li> <li>Silver creek (upper) show low</li> </ul> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.youtube.com/watch?v=qjWkNZ0SXfo">3D engine</a></p> <p><a href="https://www.youtube.com/watch?v=uRGljemfwUE">The Website is down</a></p> <p><a href="https://surfingcomplexity.blog/2026/02/08/nobody-knows-how-the-whole-system-works/">Nobody knows how the whole system works</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://databento.com/microstructure/sub-penny-rule">Good overview of sub penny rule</a></p> <p><a href="https://www.simonberens.com/p/lessons-learned-shipping-500-units">Physical products are&hellip; difficult</a></p> <p><a href="https://www.cnbc.com/amp/2026/02/07/south-korean-crypto-firm-accidentally-sends-out-44-billion-in-bitcoin.html">Oops</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://fredbenenson.com/blog/2026/02/03/221-cannon-is-not-for-sale/">Vacant land fraud</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.tenkarabum.com/">The Tenkara bum blog</a></p> <p>Places to fish:</p> <ul> <li>Willow springs creek hike behind the dam</li> <li>Canyon creek, passed woods canyon</li> <li>Silver creek (upper) show low</li> </ul> /learnedt1w/2026/02_01_2026/ Sun, 01 Feb 2026 00:00:00 +0000 /learnedt1w/2026/02_01_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://github.com/Best2Two/SQL-FlappyBird">SQL &gt;</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://qz.com/substack-tv-app-video-text?utm_source=chartr&amp;utm_medium=email&amp;utm_campaign=chartr_20260126">SUbstack tv</a></p> <p><a href="https://www.pokernews.com/news/2026/01/kaslhi-partners-with-lodge-card-club-50467.htm">Gambling on&hellip;. wait&hellip; gambling</a></p> <p><a href="https://open.spotify.com/episode/2nhqtYRxQ3ofAShea5UQWj?si=xuPUViyBTIaL0p7knpv1pQ&amp;t=938">TSMC pushing risk to hyper scalers</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://stephango.com/saw">On the saw, this dude is the CEO of Obsidian</a></p> <p><a href="https://gwern.net/blog/2026/make-me-care">First make me care</a></p> <p><a href="https://flymag.com/heathrow-drops-the-liquids-rule-what-changes-at-lhr-and-how-close-the-u-s-really-is/">Removal of security theater</a></p> <p><a href="https://x.com/theonejvo/status/2017732898632437932">Slop Markets in everything</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://github.com/Best2Two/SQL-FlappyBird">SQL &gt;</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://qz.com/substack-tv-app-video-text?utm_source=chartr&amp;utm_medium=email&amp;utm_campaign=chartr_20260126">SUbstack tv</a></p> <p><a href="https://www.pokernews.com/news/2026/01/kaslhi-partners-with-lodge-card-club-50467.htm">Gambling on&hellip;. wait&hellip; gambling</a></p> <p><a href="https://open.spotify.com/episode/2nhqtYRxQ3ofAShea5UQWj?si=xuPUViyBTIaL0p7knpv1pQ&amp;t=938">TSMC pushing risk to hyper scalers</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://stephango.com/saw">On the saw, this dude is the CEO of Obsidian</a></p> <p><a href="https://gwern.net/blog/2026/make-me-care">First make me care</a></p> <p><a href="https://flymag.com/heathrow-drops-the-liquids-rule-what-changes-at-lhr-and-how-close-the-u-s-really-is/">Removal of security theater</a></p> <p><a href="https://x.com/theonejvo/status/2017732898632437932">Slop Markets in everything</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2026/01_24_2026/ Sat, 24 Jan 2026 00:00:00 +0000 /learnedt1w/2026/01_24_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.seangoedecke.com/addicted-to-being-useful/">Being useful</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://news.polymarket.com/p/its-over">Stupid title but interesting</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://x.com/DKThomp/status/2013407553128956162">“Put differently, there were fewer births in China in 2025 than in 1776”</a></p> <p><a href="https://en.wikipedia.org/wiki/Capsicum_chinense">I got some of these spicy peppers from my neighbor</a></p> <p><a href="https://collabfund.com/blog/a-few-things-im-pretty-sure-about-2026/">Evil exists primarily in the eye of the beholder, especially in the eye of the victim.</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.seangoedecke.com/addicted-to-being-useful/">Being useful</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://news.polymarket.com/p/its-over">Stupid title but interesting</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://x.com/DKThomp/status/2013407553128956162">“Put differently, there were fewer births in China in 2025 than in 1776”</a></p> <p><a href="https://en.wikipedia.org/wiki/Capsicum_chinense">I got some of these spicy peppers from my neighbor</a></p> <p><a href="https://collabfund.com/blog/a-few-things-im-pretty-sure-about-2026/">Evil exists primarily in the eye of the beholder, especially in the eye of the victim.</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2026/01_17_2026/ Sat, 17 Jan 2026 00:00:00 +0000 /learnedt1w/2026/01_17_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://sprites.dev">Need to try out sprites</a></p> <p><a href="https://tailscale.com/blog/tailscale-rustdesk-remote-desktop-access">Tailscale remote into device</a></p> <p><a href="https://www.w3schools.com/php/php_mysql_prepared_statements.asp">Prepared statement, the anti-sql injection</a></p> <p><a href="https://www.linkedin.com/posts/scozak_look-i-love-a-good-data-pipeline-as-much-activity-7414667630814347264-X7ai?utm_source=share&amp;utm_medium=member_desktop&amp;rcm=ACoAACgybecB_jU4rkkl5EUWTxQwo809GUUTvEk">The over engineered data pipeline</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.machow.ski/">The Blog that made me start writing</a></p> <p><a href="https://robotjames.substack.com/p/pairs-trading-for-dickheads">Pair trade</a></p> <p><a href="https://www.fidelity.com/viewpoints/active-investor/iron-condor-strategy">Iron Condor</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://substack.com/home/post/p-184497965">Existential choice paralysis</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://sprites.dev">Need to try out sprites</a></p> <p><a href="https://tailscale.com/blog/tailscale-rustdesk-remote-desktop-access">Tailscale remote into device</a></p> <p><a href="https://www.w3schools.com/php/php_mysql_prepared_statements.asp">Prepared statement, the anti-sql injection</a></p> <p><a href="https://www.linkedin.com/posts/scozak_look-i-love-a-good-data-pipeline-as-much-activity-7414667630814347264-X7ai?utm_source=share&amp;utm_medium=member_desktop&amp;rcm=ACoAACgybecB_jU4rkkl5EUWTxQwo809GUUTvEk">The over engineered data pipeline</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.machow.ski/">The Blog that made me start writing</a></p> <p><a href="https://robotjames.substack.com/p/pairs-trading-for-dickheads">Pair trade</a></p> <p><a href="https://www.fidelity.com/viewpoints/active-investor/iron-condor-strategy">Iron Condor</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://substack.com/home/post/p-184497965">Existential choice paralysis</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2026/01_10_2026/ Sat, 10 Jan 2026 00:00:00 +0000 /learnedt1w/2026/01_10_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://planetscale.com/docs/what-is-planetscale">Planet scale</a></p> <p><a href="https://www.cs.cmu.edu/~pavlo/blog/2026/01/2025-databases-retrospective.html">Andy’s annual review</a></p> <p><a href="https://sympathetic.ink/2025/12/11/Column-Storage-for-the-AI-era.html">Modern column storage</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://phrack.org/issues/71/17">Interesting thoughts about modern work</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://fogcam.org">FogCam</a></p> <p><a href="https://www.youtube.com/watch?v=DF8Pny3VTg8">18000 water cups</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p><a href="https://kk.org/thetechnium/how-will-the-miracle-happen-today/">Traveling &raquo;&raquo;&gt;</a></p> <h2 id="other">Other</h2> <p><a href="https://youtu.be/ddZwavVtIpI?si=8pZh_CSdotuqDVGk">The Crazy Alberto</a></p> <p>The real issue people miss is that code isn’t an asset, it’s a liability. Every line of code is a potential bug or something that will slow down your future development. Experienced devs know to weight trade offs of more code vs maintainability. Whereas just using LLMs to shovel middling quality code as fast as you can misses those nuances and will lead to huge problems in the long run.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://planetscale.com/docs/what-is-planetscale">Planet scale</a></p> <p><a href="https://www.cs.cmu.edu/~pavlo/blog/2026/01/2025-databases-retrospective.html">Andy’s annual review</a></p> <p><a href="https://sympathetic.ink/2025/12/11/Column-Storage-for-the-AI-era.html">Modern column storage</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://phrack.org/issues/71/17">Interesting thoughts about modern work</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://fogcam.org">FogCam</a></p> <p><a href="https://www.youtube.com/watch?v=DF8Pny3VTg8">18000 water cups</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p><a href="https://kk.org/thetechnium/how-will-the-miracle-happen-today/">Traveling &raquo;&raquo;&gt;</a></p> <h2 id="other">Other</h2> <p><a href="https://youtu.be/ddZwavVtIpI?si=8pZh_CSdotuqDVGk">The Crazy Alberto</a></p> <p>The real issue people miss is that code isn’t an asset, it’s a liability. Every line of code is a potential bug or something that will slow down your future development. Experienced devs know to weight trade offs of more code vs maintainability. Whereas just using LLMs to shovel middling quality code as fast as you can misses those nuances and will lead to huge problems in the long run.</p> /learnedt1w/2026/01_03_2026/ Sat, 03 Jan 2026 00:00:00 +0000 /learnedt1w/2026/01_03_2026/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://en.wikipedia.org/wiki/Setuid">Setuid</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://martin.kleppmann.com/2011/03/07/accounting-for-computer-scientists.html">Accounting explained in graphs</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://x.com/GiancarloSopo/status/2006474169018388912">A Modern Movie Ranking</a></p> <p><a href="https://www.animatedknots.com/fishing-knots">Cool site for learning knots</a></p> <p><a href="https://www.youtube.com/watch?v=tQB_ib-KQXA">Ghost guns</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>New Years Resolutions:</p> <ol> <li>Become conversationally proficient in Spanish</li> <li>Be able to fish for myself both shore fishing and stream fishing (not fly fishing)</li> <li>Continue to Travel as much as possible</li> </ol> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://en.wikipedia.org/wiki/Setuid">Setuid</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://martin.kleppmann.com/2011/03/07/accounting-for-computer-scientists.html">Accounting explained in graphs</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://x.com/GiancarloSopo/status/2006474169018388912">A Modern Movie Ranking</a></p> <p><a href="https://www.animatedknots.com/fishing-knots">Cool site for learning knots</a></p> <p><a href="https://www.youtube.com/watch?v=tQB_ib-KQXA">Ghost guns</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>New Years Resolutions:</p> <ol> <li>Become conversationally proficient in Spanish</li> <li>Be able to fish for myself both shore fishing and stream fishing (not fly fishing)</li> <li>Continue to Travel as much as possible</li> </ol> /learnedt1w/2025/12_27_2025/ Sat, 27 Dec 2025 00:00:00 +0000 /learnedt1w/2025/12_27_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://youtu.be/aPsq5nqvhxg?si=hOBW-OKM-HzkPeHz">Livecoding melodic DNB music in Strudel</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.deepsouthventures.com/i-sell-onions-on-the-internet/">Selling onions &gt; Selling software</a> <a href="https://elevenlabs.io/payouts">Sell your&hellip; voice</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.wikipedia.org/wiki/Nonce">Nonce</a></p> <p><a href="https://nonzerosum.games/goodhartslaw.html">When a measure become a target it ceases to become a good measure&hellip; goof background on Goodhart&rsquo;s law</a></p> <p><a href="https://www.merriam-webster.com/dictionary/sepulchral">sepulchral</a></p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://poloclub.github.io/transformer-explainer/">Great Transformer explainer</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=3k20zFlbFfE">Chicken Stock</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://youtu.be/aPsq5nqvhxg?si=hOBW-OKM-HzkPeHz">Livecoding melodic DNB music in Strudel</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.deepsouthventures.com/i-sell-onions-on-the-internet/">Selling onions &gt; Selling software</a> <a href="https://elevenlabs.io/payouts">Sell your&hellip; voice</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.wikipedia.org/wiki/Nonce">Nonce</a></p> <p><a href="https://nonzerosum.games/goodhartslaw.html">When a measure become a target it ceases to become a good measure&hellip; goof background on Goodhart&rsquo;s law</a></p> <p><a href="https://www.merriam-webster.com/dictionary/sepulchral">sepulchral</a></p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://poloclub.github.io/transformer-explainer/">Great Transformer explainer</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=3k20zFlbFfE">Chicken Stock</a></p> /learnedt1w/2025/12_20_2025/ Sat, 20 Dec 2025 00:00:00 +0000 /learnedt1w/2025/12_20_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.benkuhn.net/rha/">readability, hackability and abstraction</a></p> <p>Reverse a hexdump <code>cat some_file.txt | xxd -r &gt;reversed_hex_dump.txt</code></p> <p><a href="https://databento.com/">Databento looks great</a></p> <p><a href="https://code.visualstudio.com/docs/devcontainers/containers#_quick-start-try-a-development-container">Start a dev container</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.reddit.com/r/PredictionsMarkets/s/amaTD4D3XV">Insider trading?</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://sonyawinner.com/rug-style/abstract-rugs/">Cool rugs</a></p> <p><a href="https://x.com/FischerKing64/status/1998785412559720910">Think before grabbing</a></p> <p><a href="https://www.construction-physics.com/p/why-are-so-many-pedestrians-killed">Why are so many peds killed by cars</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.instructables.com/Animate-a-Billy-Bass-Mouth-With-Any-Audio-Source/">Need to build this custom big mouth bass</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.benkuhn.net/rha/">readability, hackability and abstraction</a></p> <p>Reverse a hexdump <code>cat some_file.txt | xxd -r &gt;reversed_hex_dump.txt</code></p> <p><a href="https://databento.com/">Databento looks great</a></p> <p><a href="https://code.visualstudio.com/docs/devcontainers/containers#_quick-start-try-a-development-container">Start a dev container</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.reddit.com/r/PredictionsMarkets/s/amaTD4D3XV">Insider trading?</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://sonyawinner.com/rug-style/abstract-rugs/">Cool rugs</a></p> <p><a href="https://x.com/FischerKing64/status/1998785412559720910">Think before grabbing</a></p> <p><a href="https://www.construction-physics.com/p/why-are-so-many-pedestrians-killed">Why are so many peds killed by cars</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.instructables.com/Animate-a-Billy-Bass-Mouth-With-Any-Audio-Source/">Need to build this custom big mouth bass</a></p> /learnedt1w/2025/12_13_2025/ Sat, 13 Dec 2025 00:00:00 +0000 /learnedt1w/2025/12_13_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://turtletoy.net/turtle/789cce3829">Cool designs</a></p> <p><a href="https://www.experimental-history.com/p/bag-of-words-have-mercy-on-us">Interesting points</a></p> <ul> <li>That’s also why I see no point in using AI to, say, write an essay, just like I see no point in bringing a forklift to the gym. Sure, it can lift the weights, but I’m not trying to suspend a barbell above the floor for the hell of it. I lift it because I want to become the kind of person who can lift it. Similarly, I write because I want to become the kind of person who can think.</li> <li>The original sin of artificial intelligence was, of course, calling it artificial intelligence. Those two words have lured us into making man the measure of machine: “Now it’s as smart as an undergraduate&hellip;now it’s as smart as a PhD!” These comparisons only give us the illusion of understanding AI’s capabilities and limitations, as well as our own, because we don’t actually know what it means to be smart in the first place</li> </ul> <p><a href="https://en.wikipedia.org/wiki/ROT13">ROT13</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://turtletoy.net/turtle/789cce3829">Cool designs</a></p> <p><a href="https://www.experimental-history.com/p/bag-of-words-have-mercy-on-us">Interesting points</a></p> <ul> <li>That’s also why I see no point in using AI to, say, write an essay, just like I see no point in bringing a forklift to the gym. Sure, it can lift the weights, but I’m not trying to suspend a barbell above the floor for the hell of it. I lift it because I want to become the kind of person who can lift it. Similarly, I write because I want to become the kind of person who can think.</li> <li>The original sin of artificial intelligence was, of course, calling it artificial intelligence. Those two words have lured us into making man the measure of machine: “Now it’s as smart as an undergraduate&hellip;now it’s as smart as a PhD!” These comparisons only give us the illusion of understanding AI’s capabilities and limitations, as well as our own, because we don’t actually know what it means to be smart in the first place</li> </ul> <p><a href="https://en.wikipedia.org/wiki/ROT13">ROT13</a></p> <p><a href="https://martins1612.github.io/emergent_misalignment_betley.pdf">misaligned LLMs</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.nytimes.com/athletic/6788095/2025/11/08/espn-bet-penn-sportsbook-ending-explained/">R.I.P ESPN bet</a></p> <p><a href="https://www.fifa.com/en/tournaments/mens/worldcup/canadamexicousa2026/tickets">Is this the dumbest ticket buying experience of all time. The amount of rent seeking in this industry is disgusting</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.wikipedia.org/wiki/Brandolini%27s_law">Brandolinis Law a.k.a bullshit asymmetry principle</a></p> <p><a href="https://x.com/Lakers/status/1747815528000000102">Lebron played against 35% of all NBA players</a></p> <p><a href="https://www.aapd.org/globalassets/media/publications/archives/courts-05-03.pdf">Put your teeth in milk</a></p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://betterexplained.com/articles/an-interactive-guide-to-the-fourier-transform/">The Fourier Transform explained via smoothies</a></p> <p><a href="https://en.wikipedia.org/wiki/Top-p_sampling">Top P Sampling</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>variegated: exhibiting different colors, especially as irregular patches or streaks.</p> /learnedt1w/2025/12_06_2025/ Sat, 06 Dec 2025 00:00:00 +0000 /learnedt1w/2025/12_06_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Write stderr to dev/null: <code>2&gt;/dev/null</code></p> <p>To find a file based on user+group+size: <code>find / -type f -user bandit7 -group bandit6 -size 33c</code></p> <p>Only unique lines in a text file: <code>sort some_file.txt | uniq -u</code></p> <p><code>strings</code> command in Linux is a utility used to extract printable character sequences.</p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.nber.org/papers/w34524">Yikes, but not surprising&hellip; insider trading applies only applies to some of us</a></p> <p><a href="https://gurkan.in/2025/12/stop-talking/">A bit negative but thought provoking</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Write stderr to dev/null: <code>2&gt;/dev/null</code></p> <p>To find a file based on user+group+size: <code>find / -type f -user bandit7 -group bandit6 -size 33c</code></p> <p>Only unique lines in a text file: <code>sort some_file.txt | uniq -u</code></p> <p><code>strings</code> command in Linux is a utility used to extract printable character sequences.</p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.nber.org/papers/w34524">Yikes, but not surprising&hellip; insider trading applies only applies to some of us</a></p> <p><a href="https://gurkan.in/2025/12/stop-talking/">A bit negative but thought provoking</a></p> <ul> <li>If no one asked and no one is on the hook to change anything: Stop talking.</li> </ul> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.youtube.com/watch?v=jEju4HbOKuE">Living in Casinos full time</a></p> <ul> <li>To each their own, but this seems like a full time job which you&rsquo;d still need to support yourself. I guess you just have to really enjoy vegas and sleeping in hotels</li> </ul> <p><a href="https://en.wikipedia.org/wiki/Lockheed_CL-1201">1120 foot wingspan ft wingspan</a></p> <p><a href="https://www.begaydocrime.com">Unlocking wheels</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>The name &ldquo;marimo&rdquo; is a reference to a type of algae that, under the right conditions, clumps together to form a small sphere called a &ldquo;marimo moss ball&rdquo;. Made of just strands of algae, these beloved assemblages are greater than the sum of their parts.</p> /learnedt1w/2025/11_29_2025/ Sat, 29 Nov 2025 00:00:00 +0000 /learnedt1w/2025/11_29_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.youtube.com/watch?v=iic3xg_7M4s">Transfer back to VHS</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://en.wikipedia.org/wiki/Jason_Williams_%28basketball,_born_1975%29">Jason Williams was teammates with Randy Moss</a></p> <p>I think I deleted all my saved links this week so only these this week.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.youtube.com/watch?v=iic3xg_7M4s">Transfer back to VHS</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://en.wikipedia.org/wiki/Jason_Williams_%28basketball,_born_1975%29">Jason Williams was teammates with Randy Moss</a></p> <p>I think I deleted all my saved links this week so only these this week.</p> /learnedt1w/2025/11_22_2025/ Sat, 22 Nov 2025 00:00:00 +0000 /learnedt1w/2025/11_22_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://rein.pk/over-regulation-is-doubling-the-cost">Overregulation, where’s the happyMiddle ground?</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.wikipedia.org/wiki/TeleZapper">Telezapper</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://rein.pk/over-regulation-is-doubling-the-cost">Overregulation, where’s the happyMiddle ground?</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.wikipedia.org/wiki/TeleZapper">Telezapper</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/11_15_2025/ Sat, 15 Nov 2025 00:00:00 +0000 /learnedt1w/2025/11_15_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.amoses.dev/blog/wifi-location/">Wifi location</a></p> <p><a href="https://en.wikipedia.org/wiki/Wi-Fi_Alliance#Wi-Fi_Aware">Wifi aware</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.cartographerstale.com/p/an-official-atlas-of-north-korea">Korean maps</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.ryanpuzycki.com/p/the-banished-bottom-of-the-housing">YMCA and low income housing</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.amoses.dev/blog/wifi-location/">Wifi location</a></p> <p><a href="https://en.wikipedia.org/wiki/Wi-Fi_Alliance#Wi-Fi_Aware">Wifi aware</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.cartographerstale.com/p/an-official-atlas-of-north-korea">Korean maps</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.ryanpuzycki.com/p/the-banished-bottom-of-the-housing">YMCA and low income housing</a></p> /learnedt1w/2025/11_08_2025/ Sat, 08 Nov 2025 00:00:00 +0000 /learnedt1w/2025/11_08_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://blog.lyc8503.net/en/post/asn-5-worldwide-servers/">Running your own ISP</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://sherwood.news/tech/meta-projected-10-of-2024-revenue-came-from-scams-and-banned-goods-reuters/">10% of meta revenue is from scams</a></p> <p><a href="https://techcrunch.com/2025/11/12/waymo-robotaxis-are-now-giving-rides-on-freeways-in-these-3-cities/">Lets go, no more driving</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.theparisreview.org/blog/2025/10/29/truck-desk/">Truck desk</a></p> <p><a href="https://www.guinnessworldrecords.com/world-records/663798-largest-glass-window">Biggest piece of glass</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://en.wikipedia.org/wiki/April_Revolution">4/19 revolution</a></p> <p><a href="https://en.wikipedia.org/wiki/The_Log_from_the_Sea_of_Cortez">Steinbeck I&rsquo;d like to read</a></p> <p><a href="https://postranchinn.com/butterfly/">Cool place to stay</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://blog.lyc8503.net/en/post/asn-5-worldwide-servers/">Running your own ISP</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://sherwood.news/tech/meta-projected-10-of-2024-revenue-came-from-scams-and-banned-goods-reuters/">10% of meta revenue is from scams</a></p> <p><a href="https://techcrunch.com/2025/11/12/waymo-robotaxis-are-now-giving-rides-on-freeways-in-these-3-cities/">Lets go, no more driving</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.theparisreview.org/blog/2025/10/29/truck-desk/">Truck desk</a></p> <p><a href="https://www.guinnessworldrecords.com/world-records/663798-largest-glass-window">Biggest piece of glass</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://en.wikipedia.org/wiki/April_Revolution">4/19 revolution</a></p> <p><a href="https://en.wikipedia.org/wiki/The_Log_from_the_Sea_of_Cortez">Steinbeck I&rsquo;d like to read</a></p> <p><a href="https://postranchinn.com/butterfly/">Cool place to stay</a></p> /learnedt1w/2025/11_01_2025/ Sat, 01 Nov 2025 00:00:00 +0000 /learnedt1w/2025/11_01_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://pokerbattle.ai/event">How do I get in this tournament</a></p> <p><a href="https://x.com/deedydas/status/1980816637063565623">oof</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://tradingeconomics.com/south-korea/stock-market">South Korean stock market going crazy</a></p> <p><a href="https://www.bloomberg.com/news/features/2025-10-02/jane-street-billionaire-rob-granieri-smashes-wall-street-trading-records">rob granieri</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://youtu.be/cZk2jV5gJbM?si=_4s5FpSXCY9Fb_xz">True spirit of gravel</a></p> <p><a href="https://www.thebignewsletter.com/p/addiction-markets-abolish-corporate">The gambling state</a></p> <p><a href="https://youtu.be/9Ii1ROzeSwU?si=ZRoeX-yuzGJM-cXO">Watching a video about the harms of gambling that we preempted by a Kalshi ad telling me to bet on things</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://pokerbattle.ai/event">How do I get in this tournament</a></p> <p><a href="https://x.com/deedydas/status/1980816637063565623">oof</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://tradingeconomics.com/south-korea/stock-market">South Korean stock market going crazy</a></p> <p><a href="https://www.bloomberg.com/news/features/2025-10-02/jane-street-billionaire-rob-granieri-smashes-wall-street-trading-records">rob granieri</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://youtu.be/cZk2jV5gJbM?si=_4s5FpSXCY9Fb_xz">True spirit of gravel</a></p> <p><a href="https://www.thebignewsletter.com/p/addiction-markets-abolish-corporate">The gambling state</a></p> <p><a href="https://youtu.be/9Ii1ROzeSwU?si=ZRoeX-yuzGJM-cXO">Watching a video about the harms of gambling that we preempted by a Kalshi ad telling me to bet on things</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/10_25_2025/ Sat, 25 Oct 2025 00:00:00 +0000 /learnedt1w/2025/10_25_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://overthewire.org/wargames/bandit">Worked through these, pretty fun!</a></p> <p><a href="https://itsfoss.com/ssh-to-port/">SSH hardening</a></p> <p><a href="https://maurycyz.com/projects/fading/">TV signals</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://marginalrevolution.com/marginalrevolution/2025/10/prediction-markets-are-very-accurate.html">Kind of accurate?</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.stat.berkeley.edu/~aldous/157/Papers/PointShaving.pdf">Everything is gambling</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://overthewire.org/wargames/bandit">Worked through these, pretty fun!</a></p> <p><a href="https://itsfoss.com/ssh-to-port/">SSH hardening</a></p> <p><a href="https://maurycyz.com/projects/fading/">TV signals</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://marginalrevolution.com/marginalrevolution/2025/10/prediction-markets-are-very-accurate.html">Kind of accurate?</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.stat.berkeley.edu/~aldous/157/Papers/PointShaving.pdf">Everything is gambling</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/10_18_2025/ Sat, 18 Oct 2025 00:00:00 +0000 /learnedt1w/2025/10_18_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.redshift-observatory.ch/">Redshift observatory</a></p> <p><a href="https://news.ycombinator.com/item?id=45610010">Foundational mental model</a> to get the hang of ever “new” LLM conceptual churn:</p> <ul> <li>An LLM</li> <li>&hellip;called in a loop</li> <li>&hellip;maintaining a history of stuff it&rsquo;s done in the session (the &ldquo;context&rdquo;)</li> <li>&hellip;with access to tool calls to do things. Like, read files, write files, call bash, etc.</li> </ul> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.humaninvariant.com/blog/titles">A breakdown of “if I call myself ‘x’ or manager of ‘x’ I make more Money”</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.redshift-observatory.ch/">Redshift observatory</a></p> <p><a href="https://news.ycombinator.com/item?id=45610010">Foundational mental model</a> to get the hang of ever “new” LLM conceptual churn:</p> <ul> <li>An LLM</li> <li>&hellip;called in a loop</li> <li>&hellip;maintaining a history of stuff it&rsquo;s done in the session (the &ldquo;context&rdquo;)</li> <li>&hellip;with access to tool calls to do things. Like, read files, write files, call bash, etc.</li> </ul> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.humaninvariant.com/blog/titles">A breakdown of “if I call myself ‘x’ or manager of ‘x’ I make more Money”</a></p> <p><a href="https://www.cnbc.com/2024/08/21/cryptocurrency-shan-hanes-pig-butchering-scam.html">How does a single person have the authority to carry this out</a></p> <p><a href="https://www.nickstambaugh.dev/posts/LINQ-and-being-declarative">LINQ is cool</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://vimeo.com/13159991">Motorcycles</a></p> <p><a href="https://freetofile.com/">I hate Turbo tax so much, please use this</a></p> <p><a href="https://notes.mtb.xyz/p/your-data-model-is-your-destiny">AI is commoditizing code.</a> Technical execution is table stakes rather than a competitive advantage. AI can generate code, but it can’t refactor the organizational reality customers have built around your architecture—the workflows, integrations, and institutional muscle memory that compound over time. * Is code really comoditized? Or is just boiler plate comoditized? But&hellip; wasn&rsquo;t it already comoditized?</p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://danielstone.substack.com/p/money-stuff-is-linear-ish">Could be fun to create a visual graph of all money-stuff posts</a></p> <p><a href="https://arstechnica.com/gadgets/2025/09/samsung-forces-ads-onto-fridges-is-a-bad-sign-for-other-appliances/">Stop putting screens on things that don’t need screens</a></p> /learnedt1w/2025/10_11_2025/ Sat, 11 Oct 2025 00:00:00 +0000 /learnedt1w/2025/10_11_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://stackoverflow.com/questions/415403/whats-the-difference-between-bashrc-bash-profile-and-environment">bashrc vs bash_profile</a></p> <p><a href="https://vkoskiv.com/first-linux-patch/">A Linux contribution</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://protein.starbucks.com/?utm_source=google&amp;utm_medium=search&amp;utm_campaign=ProteinLP&amp;gad_source=1&amp;gad_campaignid=23056097230&amp;gbraid=0AAAAADoJV5vpxBYfPwHnl-HyNqIEhoPo0&amp;gclid=Cj0KCQjwgKjHBhChARIsAPJR3xfxoZis37Iku-Al7lI4cgvU54owtfXvhKFGgTVfIoDdwWIXQhnCgB8aAvFAEALw_wcB">Starbucks protein</a></p> <p><a href="https://en.wikipedia.org/wiki/Boom_Technology">Back to supersonic flight</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://structuredprocrastination.com">Procrastination</a></p> <p><a href="https://pubmed.ncbi.nlm.nih.gov/40760353/">Ultra processed ok in moderation</a></p> <p><a href="https://preply.com/en/blog/hanja-vs-hangul/">Hanja vs Hangul</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p><a href="https://jeremymaluf.com/onebag/">One bag travel</a></p> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://stackoverflow.com/questions/415403/whats-the-difference-between-bashrc-bash-profile-and-environment">bashrc vs bash_profile</a></p> <p><a href="https://vkoskiv.com/first-linux-patch/">A Linux contribution</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://protein.starbucks.com/?utm_source=google&amp;utm_medium=search&amp;utm_campaign=ProteinLP&amp;gad_source=1&amp;gad_campaignid=23056097230&amp;gbraid=0AAAAADoJV5vpxBYfPwHnl-HyNqIEhoPo0&amp;gclid=Cj0KCQjwgKjHBhChARIsAPJR3xfxoZis37Iku-Al7lI4cgvU54owtfXvhKFGgTVfIoDdwWIXQhnCgB8aAvFAEALw_wcB">Starbucks protein</a></p> <p><a href="https://en.wikipedia.org/wiki/Boom_Technology">Back to supersonic flight</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://structuredprocrastination.com">Procrastination</a></p> <p><a href="https://pubmed.ncbi.nlm.nih.gov/40760353/">Ultra processed ok in moderation</a></p> <p><a href="https://preply.com/en/blog/hanja-vs-hangul/">Hanja vs Hangul</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p><a href="https://jeremymaluf.com/onebag/">One bag travel</a></p> <h2 id="other">Other</h2> /learnedt1w/2025/10_04_2025/ Sat, 04 Oct 2025 00:00:00 +0000 /learnedt1w/2025/10_04_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags/1732454#1732454">HTML Regex parsing, at least an LLM would have said &ldquo;great idea&rdquo; </a></p> <p><a href="https://db.cs.cmu.edu/papers/2025/zeng-sigmod2025.pdf">Future proof file format</a></p> <p><a href="https://www.amplifypartners.com/blog-posts/why-tigerbeetle-is-the-most-interesting-database-in-the-world">Tiger beetle DB</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.wsj.com/finance/investing/why-microsoft-has-lower-borrowing-costs-than-the-u-s-de841633?gaa_at=eafs&amp;gaa_n=ASWzDAiwI1UFJFPoTbNpjOVGzTYwaolqowvjKBVCaQpUw_VTefaUdarQ-hwtVO-aYRw%3D&amp;gaa_ts=68daba7d&amp;gaa_sig=eAKlZaTmI6IN7-G2MFJouFUQNUl7B810S_9sIauRxy8eeg1seHwv_caGV_Z2K6M_nvVEQL2ACMZI997O0UcbbA%3D%3D">Hmmmmmm</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://weakty.com/posts/efforts/">Our efforts define us</a></p> <p><a href="https://www.youtube.com/live/tk0tfYDxrUA?si=VpirYoF8MI58RWvI">Volcano</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p><a href="https://matduggan.com/greenland-is-a-beautiful-nightmare/">Greenland</a></p> <h2 id="other">Other</h2> <p><a href="https://predictions.collegefootballdata.com/">CFB predictions</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags/1732454#1732454">HTML Regex parsing, at least an LLM would have said &ldquo;great idea&rdquo; </a></p> <p><a href="https://db.cs.cmu.edu/papers/2025/zeng-sigmod2025.pdf">Future proof file format</a></p> <p><a href="https://www.amplifypartners.com/blog-posts/why-tigerbeetle-is-the-most-interesting-database-in-the-world">Tiger beetle DB</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.wsj.com/finance/investing/why-microsoft-has-lower-borrowing-costs-than-the-u-s-de841633?gaa_at=eafs&amp;gaa_n=ASWzDAiwI1UFJFPoTbNpjOVGzTYwaolqowvjKBVCaQpUw_VTefaUdarQ-hwtVO-aYRw%3D&amp;gaa_ts=68daba7d&amp;gaa_sig=eAKlZaTmI6IN7-G2MFJouFUQNUl7B810S_9sIauRxy8eeg1seHwv_caGV_Z2K6M_nvVEQL2ACMZI997O0UcbbA%3D%3D">Hmmmmmm</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://weakty.com/posts/efforts/">Our efforts define us</a></p> <p><a href="https://www.youtube.com/live/tk0tfYDxrUA?si=VpirYoF8MI58RWvI">Volcano</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p><a href="https://matduggan.com/greenland-is-a-beautiful-nightmare/">Greenland</a></p> <h2 id="other">Other</h2> <p><a href="https://predictions.collegefootballdata.com/">CFB predictions</a></p> /learnedt1w/2025/09_27_2025/ Sat, 27 Sep 2025 00:00:00 +0000 /learnedt1w/2025/09_27_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://taleshape.com/shaper/docs/dashboard-sql-reference/">Shaper looks interesting</a></p> <p><a href="https://arxiv.org/abs/2503.05136">Homomorphic Encryption</a></p> <blockquote> <p>Fully Homomorphic Encryption (FHE) is a cryptographic scheme that enables computations to be performed directly on encrypted data, as if the data were in plaintext. After all computations are performed on the encrypted data, it can be decrypted to reveal the result.</p></blockquote> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.theverge.com/tech/781387/backpacking-ultralight-haribo-power-bank">Haribo power bank</a></p> <p><a href="https://en.wikipedia.org/wiki/Automaticity%27">Automaticity “Highway hypnosis” </a></p> <p><a href="https://www.ifixit.com/News/113171/iphone-air-teardown">iPhone air looks&hellip; bendable</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=nv_2rz5BFDA">Jazz</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://taleshape.com/shaper/docs/dashboard-sql-reference/">Shaper looks interesting</a></p> <p><a href="https://arxiv.org/abs/2503.05136">Homomorphic Encryption</a></p> <blockquote> <p>Fully Homomorphic Encryption (FHE) is a cryptographic scheme that enables computations to be performed directly on encrypted data, as if the data were in plaintext. After all computations are performed on the encrypted data, it can be decrypted to reveal the result.</p></blockquote> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.theverge.com/tech/781387/backpacking-ultralight-haribo-power-bank">Haribo power bank</a></p> <p><a href="https://en.wikipedia.org/wiki/Automaticity%27">Automaticity “Highway hypnosis” </a></p> <p><a href="https://www.ifixit.com/News/113171/iphone-air-teardown">iPhone air looks&hellip; bendable</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=nv_2rz5BFDA">Jazz</a></p> /learnedt1w/2025/09_20_2025/ Sat, 20 Sep 2025 00:00:00 +0000 /learnedt1w/2025/09_20_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://glidepathfinancial.com/tdf-ranking/">TDF rankings</a></p> <p><a href="https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3694592">Dominated ETFs:</a></p> <ul> <li>“As a case in point, the iShares US Technology ETF (IYW) is consistently dominated by the Technology Select Sector SPDR Fund (XLK) and the Vanguard Information Technology Index Fund (VGT). At the end of our sample, IYW generates an annualized $18 million in fees with a 0.43% expense ratio on $4 billion in assets. XLK and VGT generate $28 million and $20 million in fees, respectively, despite their much larger sizes of $22 billion and $20 billion in assets. Even though SPDR and Vanguard attract five times the assets with significantly lower expense ratios of 0.13% and 0.10%, the three funds are each profitable and generate similar fee income.”</li> </ul> <p><a href="https://rekt.news/who-got-rugged">Rug pullling…. Yourself:</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://glidepathfinancial.com/tdf-ranking/">TDF rankings</a></p> <p><a href="https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3694592">Dominated ETFs:</a></p> <ul> <li>“As a case in point, the iShares US Technology ETF (IYW) is consistently dominated by the Technology Select Sector SPDR Fund (XLK) and the Vanguard Information Technology Index Fund (VGT). At the end of our sample, IYW generates an annualized $18 million in fees with a 0.43% expense ratio on $4 billion in assets. XLK and VGT generate $28 million and $20 million in fees, respectively, despite their much larger sizes of $22 billion and $20 billion in assets. Even though SPDR and Vanguard attract five times the assets with significantly lower expense ratios of 0.13% and 0.10%, the three funds are each profitable and generate similar fee income.”</li> </ul> <p><a href="https://rekt.news/who-got-rugged">Rug pullling…. Yourself:</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.sdstate.edu/news/2025/08/can-grapevines-help-slow-plastic-waste-problem">Grapevines = plastic</a></p> <p><a href="https://ag.ny.gov/sites/default/files/court-filings/new-york-v-eric-langan-et-al-indictment-2025.pdf">Deal making at its finest</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.medicinenet.com/sodium_citrate/article.htm">Sodium citrate helps prevent the formation of kidney stones</a></p> <p>“Humor can be dissected as a frog can, but the thing dies in the process and the innards are discouraging to any but the pure scientific mind.”</p> <p>― E. B. White</p> /learnedt1w/2025/09_13_2025/ Sat, 13 Sep 2025 00:00:00 +0000 /learnedt1w/2025/09_13_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://xeiaso.net/notes/2025/we-dodged-a-bullet/">10/10 fishing</a></p> <p><a href="https://setheliot.com/blog/2015/01/08/who-is-the-hippo/">Highest Paid Person&rsquo;s Opinion</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.wsj.com/finance/stocks/robinhood-a-broker-built-for-social-media-age-will-launch-its-own-social-network-a89a7608?mod=wsj_furtherreading_pos_1">Spotify/Robinhood want to control more social real estate</a></p> <p><a href="https://www.pricepoints.health/p/blues">Health care arb because stupidity:</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.youtube.com/watch?v=Q60oEThfF-k">NFL helmet deep dive</a></p> <p><a href="https://abcnews.go.com/US/exclusive-undercover-dhs-tests-find-widespread-security-failures/story?id=31434881">Security Theater</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=7fW16i40ZDQ">Steamed brisket</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://xeiaso.net/notes/2025/we-dodged-a-bullet/">10/10 fishing</a></p> <p><a href="https://setheliot.com/blog/2015/01/08/who-is-the-hippo/">Highest Paid Person&rsquo;s Opinion</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.wsj.com/finance/stocks/robinhood-a-broker-built-for-social-media-age-will-launch-its-own-social-network-a89a7608?mod=wsj_furtherreading_pos_1">Spotify/Robinhood want to control more social real estate</a></p> <p><a href="https://www.pricepoints.health/p/blues">Health care arb because stupidity:</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.youtube.com/watch?v=Q60oEThfF-k">NFL helmet deep dive</a></p> <p><a href="https://abcnews.go.com/US/exclusive-undercover-dhs-tests-find-widespread-security-failures/story?id=31434881">Security Theater</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=7fW16i40ZDQ">Steamed brisket</a></p> /learnedt1w/2025/09_06_2025/ Sat, 06 Sep 2025 00:00:00 +0000 /learnedt1w/2025/09_06_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://github.com/Varietyz/Disciplined-AI-Software-Development">md files to make llm go brrrr</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.m.wikipedia.org/wiki/Ablution">Ablution</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=NnzADfbBBFo">Baked ribs</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://github.com/Varietyz/Disciplined-AI-Software-Development">md files to make llm go brrrr</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.m.wikipedia.org/wiki/Ablution">Ablution</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=NnzADfbBBFo">Baked ribs</a></p> /learnedt1w/2025/08_30_2025/ Sat, 30 Aug 2025 00:00:00 +0000 /learnedt1w/2025/08_30_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://materializedview.io/p/nimble-and-lance-parquet-killers">Nimble and Lance vs parquet</a></p> <p><a href="https://samwho.dev/big-o/">One of the most well designed blog</a></p> <p><a href="https://ntietz.com/blog/that-boolean-should-probably-be-something-else/">Interesting thoughts on booleans</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://open.spotify.com/episode/1zj3EYCwcvFkl7Zdjsj2sZ?si=Mz250qKuQGuqKy4QM6OQvw">An argument for the US stake in intel</a></p> <p><a href="https://ethanding.substack.com/p/ai-subscriptions-get-short-squeezed">RIP llm subscription mode</a></p> <p><a href="https://woodcoincrypto.com">Full circle back to physical currency</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.youtube.com/watch?v=cAk4v34ehCs">What a cool sport</a></p> <p><a href="https://www.iflscience.com/those-white-dots-on-strawberries-aren-t-strawberry-seeds-67201">Strawberry TIL</a></p> <p><a href="https://x.com/Osint613/status/1960153919000297830">Got to experience this haboob</a></p> <p><a href="https://en.m.wikipedia.org/wiki/Red_Queen%27s_race">Red queen’s race</a></p> <p><a href="https://en.m.wikipedia.org/wiki/Laser_peening">Laser peening</a></p> <p><a href="https://en.m.wikipedia.org/wiki/Hubert_Blaine_Wolfeschlegelsteinhausenbergerdorff_Sr.">Longest name</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Because transparency is of prime importance, the healthy cornea does not have or need blood vessels within it. Instead, oxygen dissolves in tears and then diffuses throughout the cornea to keep it healthy: <a href="https://en.m.wikipedia.org/wiki/Cornea">https://en.m.wikipedia.org/wiki/Cornea</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://materializedview.io/p/nimble-and-lance-parquet-killers">Nimble and Lance vs parquet</a></p> <p><a href="https://samwho.dev/big-o/">One of the most well designed blog</a></p> <p><a href="https://ntietz.com/blog/that-boolean-should-probably-be-something-else/">Interesting thoughts on booleans</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://open.spotify.com/episode/1zj3EYCwcvFkl7Zdjsj2sZ?si=Mz250qKuQGuqKy4QM6OQvw">An argument for the US stake in intel</a></p> <p><a href="https://ethanding.substack.com/p/ai-subscriptions-get-short-squeezed">RIP llm subscription mode</a></p> <p><a href="https://woodcoincrypto.com">Full circle back to physical currency</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.youtube.com/watch?v=cAk4v34ehCs">What a cool sport</a></p> <p><a href="https://www.iflscience.com/those-white-dots-on-strawberries-aren-t-strawberry-seeds-67201">Strawberry TIL</a></p> <p><a href="https://x.com/Osint613/status/1960153919000297830">Got to experience this haboob</a></p> <p><a href="https://en.m.wikipedia.org/wiki/Red_Queen%27s_race">Red queen’s race</a></p> <p><a href="https://en.m.wikipedia.org/wiki/Laser_peening">Laser peening</a></p> <p><a href="https://en.m.wikipedia.org/wiki/Hubert_Blaine_Wolfeschlegelsteinhausenbergerdorff_Sr.">Longest name</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Because transparency is of prime importance, the healthy cornea does not have or need blood vessels within it. Instead, oxygen dissolves in tears and then diffuses throughout the cornea to keep it healthy: <a href="https://en.m.wikipedia.org/wiki/Cornea">https://en.m.wikipedia.org/wiki/Cornea</a></p> <p>A VM makes an OS believe that it has the machine to itself; a container makes a process believe that it has the OS to itself.</p> /learnedt1w/2025/08_23_2025/ Sat, 23 Aug 2025 00:00:00 +0000 /learnedt1w/2025/08_23_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <p>Officially one year of doing this!</p> <h2 id="software">Software</h2> <p><a href="https://clickhouse.com/blog/moosestack-does-olap-need-an-orm">OLAP ORMS</a></p> <p><a href="https://web.archive.org/web/20151108084710/http://compsoc.dur.ac.uk/whitespace/tutorial.html">Whitespace could be the language of the future</a></p> <p><a href="https://motherduck.com/blog/semantic-layer-duckdb-tutorial/">Semantic layers&hellip; if your org can stomach it</a></p> <p><a href="https://readyset.io/blog/optimizing-straddled-joins-in-readyset-from-hash-joins-to-index-condition-pushdown">Filter first</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://churchofturing.github.io/the-enterprise-experience.html">$enterprise</a></p> <ul> <li>Yes, tracking down owners of things IS that hard</li> </ul> <p><a href="https://sherwood.news/business/fords-safety-recall-total-hits-triple-digits-blowing-past-previous-full-year/?utm_source=snacks&amp;utm_medium=email&amp;utm_campaign=snacks_20250818&amp;utm_content=495bba31e64228f8acb07385e68b4aa0">America!, hell yeah!</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://oldcoinbad.com/p/long-degeneracy">&ldquo;As real returns compress, risk increases to compensate.&rdquo;</a></p> <p><a href="https://help.obsidian.md/bases">Bases in Obsidian</a></p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://blog.demofox.org/2025/08/16/derivatives-gradients-jacobians-and-hessians-oh-my/">A little further into derivatives</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://science.nasa.gov/science-research/heliophysics/a-gigantic-jet-caught-on-camera-a-spritacular-moment-for-nasa-astronaut-nicole-ayers/">Gigantic jet</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <p>Officially one year of doing this!</p> <h2 id="software">Software</h2> <p><a href="https://clickhouse.com/blog/moosestack-does-olap-need-an-orm">OLAP ORMS</a></p> <p><a href="https://web.archive.org/web/20151108084710/http://compsoc.dur.ac.uk/whitespace/tutorial.html">Whitespace could be the language of the future</a></p> <p><a href="https://motherduck.com/blog/semantic-layer-duckdb-tutorial/">Semantic layers&hellip; if your org can stomach it</a></p> <p><a href="https://readyset.io/blog/optimizing-straddled-joins-in-readyset-from-hash-joins-to-index-condition-pushdown">Filter first</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://churchofturing.github.io/the-enterprise-experience.html">$enterprise</a></p> <ul> <li>Yes, tracking down owners of things IS that hard</li> </ul> <p><a href="https://sherwood.news/business/fords-safety-recall-total-hits-triple-digits-blowing-past-previous-full-year/?utm_source=snacks&amp;utm_medium=email&amp;utm_campaign=snacks_20250818&amp;utm_content=495bba31e64228f8acb07385e68b4aa0">America!, hell yeah!</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://oldcoinbad.com/p/long-degeneracy">&ldquo;As real returns compress, risk increases to compensate.&rdquo;</a></p> <p><a href="https://help.obsidian.md/bases">Bases in Obsidian</a></p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://blog.demofox.org/2025/08/16/derivatives-gradients-jacobians-and-hessians-oh-my/">A little further into derivatives</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://science.nasa.gov/science-research/heliophysics/a-gigantic-jet-caught-on-camera-a-spritacular-moment-for-nasa-astronaut-nicole-ayers/">Gigantic jet</a></p> /learnedt1w/2025/08_16_2025/ Sat, 16 Aug 2025 00:00:00 +0000 /learnedt1w/2025/08_16_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://jeremywhittaker.com/index.php/2024/09/24/arbitrage-in-polymarket-com/">Poly Market Arbing</a></p> <p><a href="https://www.cnn.com/2025/08/12/business/kodak-survival-warning">Uh Oh Kodak</a></p> <p><a href="https://finance.yahoo.com/quote/LESL/financials/?guccounter=1">Leslie&rsquo;s has some&hellip; uh&hellip; debt obligations</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://youtu.be/i0RkEs3Xwf0?si=jGc3kbmewSHGaROT">Clams in poland</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=aOwmt39L2IQ">Alcohol</a></p> <p><a href="https://www.youtube.com/watch?v=2_tYbWOnAY4">Creatine in cycling</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://jeremywhittaker.com/index.php/2024/09/24/arbitrage-in-polymarket-com/">Poly Market Arbing</a></p> <p><a href="https://www.cnn.com/2025/08/12/business/kodak-survival-warning">Uh Oh Kodak</a></p> <p><a href="https://finance.yahoo.com/quote/LESL/financials/?guccounter=1">Leslie&rsquo;s has some&hellip; uh&hellip; debt obligations</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://youtu.be/i0RkEs3Xwf0?si=jGc3kbmewSHGaROT">Clams in poland</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=aOwmt39L2IQ">Alcohol</a></p> <p><a href="https://www.youtube.com/watch?v=2_tYbWOnAY4">Creatine in cycling</a></p> /learnedt1w/2025/08_09_2025/ Sat, 09 Aug 2025 00:00:00 +0000 /learnedt1w/2025/08_09_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://thereader.mitpress.mit.edu/the-secret-history-of-tor-how-a-military-project-became-a-lifeline-for-privacy/">tor history</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://eidel.io/exit-tax-leave-germany-before-your-business-gets-big/">Germany exit taxes&hellip;incentives&hellip;</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.digitaldigging.org/p/chatgpt-confessions-gone-they-are">Oops</a></p> <p><a href="https://www.buildcanada.com/en/projects">a little transparency goes a long way</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://pubmed.ncbi.nlm.nih.gov/37770574/">Waist to height ratio better than bmi?</a></p> <p><a href="https://www.gutenberg.org/files/6765/6765-h/6765-h.htm#link2H_4_0002">MOGENS by Jens Peter Jacobsen, I&rsquo;d like to read</a></p> <p><a href="https://x.com/allie__voss/status/1953182700774261004/photo/1">Don’t start with the thank you. </a></p> <p><a href="https://lee-naish.github.io/src/posavespeed/">Equivalent speed</a></p> <p><a href="https://www.wsj.com/arts-culture/food-cooking/oreos-inside-reeses-reeses-inside-oreos-its-the-manhattan-project-of-snacks-a1f71e65?st=hWwpq1">Reese + Oreo, incredible</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://thereader.mitpress.mit.edu/the-secret-history-of-tor-how-a-military-project-became-a-lifeline-for-privacy/">tor history</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://eidel.io/exit-tax-leave-germany-before-your-business-gets-big/">Germany exit taxes&hellip;incentives&hellip;</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.digitaldigging.org/p/chatgpt-confessions-gone-they-are">Oops</a></p> <p><a href="https://www.buildcanada.com/en/projects">a little transparency goes a long way</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://pubmed.ncbi.nlm.nih.gov/37770574/">Waist to height ratio better than bmi?</a></p> <p><a href="https://www.gutenberg.org/files/6765/6765-h/6765-h.htm#link2H_4_0002">MOGENS by Jens Peter Jacobsen, I&rsquo;d like to read</a></p> <p><a href="https://x.com/allie__voss/status/1953182700774261004/photo/1">Don’t start with the thank you. </a></p> <p><a href="https://lee-naish.github.io/src/posavespeed/">Equivalent speed</a></p> <p><a href="https://www.wsj.com/arts-culture/food-cooking/oreos-inside-reeses-reeses-inside-oreos-its-the-manhattan-project-of-snacks-a1f71e65?st=hWwpq1">Reese + Oreo, incredible</a></p> /learnedt1w/2025/08_02_2025/ Sat, 02 Aug 2025 00:00:00 +0000 /learnedt1w/2025/08_02_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://ubuntu.com/about">Ubuntu is an ancient African word meaning ‘humanity to others’</a></p> <p><a href="https://byteofdev.com/posts/making-postgres-slow/">Ruining postgres</a></p> <p><a href="https://bikepacking.com/plog/when-we-get-komooted/">VC!</a></p> <p><a href="https://gchq.github.io/CyberChef/">Web app for decoding</a></p> <p><a href="https://cs3110.github.io/textbook/chapters/appendix/bigoh.html">Big O Caml</a></p> <p><a href="https://www.hyrumslaw.com/">hyrumslaw</a></p> <blockquote> <p>&ldquo;With a sufficient number of users of an API, it does not matter what you promise in the contract: all observable behaviors of your system will be depended on by somebody.&rdquo;</p></blockquote> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://theisolationjournals.substack.com/p/self-employed-self-exhausted">Taking a break</a></p> <blockquote> <p>To make a prairie it takes a clover and one bee, One clover, and a bee. And revery. The revery alone will do, If bees are few.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://ubuntu.com/about">Ubuntu is an ancient African word meaning ‘humanity to others’</a></p> <p><a href="https://byteofdev.com/posts/making-postgres-slow/">Ruining postgres</a></p> <p><a href="https://bikepacking.com/plog/when-we-get-komooted/">VC!</a></p> <p><a href="https://gchq.github.io/CyberChef/">Web app for decoding</a></p> <p><a href="https://cs3110.github.io/textbook/chapters/appendix/bigoh.html">Big O Caml</a></p> <p><a href="https://www.hyrumslaw.com/">hyrumslaw</a></p> <blockquote> <p>&ldquo;With a sufficient number of users of an API, it does not matter what you promise in the contract: all observable behaviors of your system will be depended on by somebody.&rdquo;</p></blockquote> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://theisolationjournals.substack.com/p/self-employed-self-exhausted">Taking a break</a></p> <blockquote> <p>To make a prairie it takes a clover and one bee, One clover, and a bee. And revery. The revery alone will do, If bees are few.</p></blockquote> <ul> <li>Emily Dickinson:</li> </ul> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Nan-in (南隠), a Japanese master during the Meiji era (1868-1912), received a university professor who came to inquire about Zen. Nan-in served tea. He poured his visitor’s cup full, and then kept on pouring. The professor watched the overflow until he no longer could restrain himself. “It is overfull. No more will go in!” “Like this cup,” Nan-in said, “you are full of your own opinions and speculations. How can I show you Zen unless you first empty your cup?”</p> <p>&ldquo;Expression, carrying the elegance that comes from compressed energy, is like a perfectly tuned stringed instrument: the strings are taut to exact degrees to correspond to exact pitches that stand in exact relations to one another. The pitches and their relations exist before the strings are tuned. Each string is tuned to a pitch and the results are judged by comparison to this pre-existing reality. A musician tuning an instrument is not finished until everything is exactly right, but once it is exactly right, there is simply nothing left to do.&rdquo; &ndash; Clear and Simple as the Truth: Writing Classic Prose, Thomas, Turner.</p> /learnedt1w/2025/07_26_2025/ Sat, 26 Jul 2025 00:00:00 +0000 /learnedt1w/2025/07_26_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://yberreby.com/posts/i-used-arch-btw-macos-day-1/">Setting up a new mac</a></p> <ul> <li><a href="https://www.raycast.com/0">Addded Raycast to my Mac and it&rsquo;s quite nice</a></li> </ul> <p><a href="https://modelcontextprotocol.io/quickstart/server#python">Quick start mcp</a></p> <p><a href="https://idiallo.com/blog/zipbomb-protection">Zip Bomb server protection</a></p> <p><a href="https://thenewstack.io/mcp-is-rss-for-ai-more-use-cases-for-model-context-protocol/">don’t just red docs, also talk to them</a></p> <ul> <li>Interesting, pretty undeniable use case for LLMs that&rsquo;s effective</li> </ul> <p><a href="https://blog.askesis.pl/post/2017/04/how-to-debug-zsh-startup-time.html">zprof</a></p> <p><a href="https://github.com/aws/aws-toolkit-vscode/commit/1294b38b7fade342cfcbaf7cf80e2e5096ea1f9c">Letting Q run wild</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://yberreby.com/posts/i-used-arch-btw-macos-day-1/">Setting up a new mac</a></p> <ul> <li><a href="https://www.raycast.com/0">Addded Raycast to my Mac and it&rsquo;s quite nice</a></li> </ul> <p><a href="https://modelcontextprotocol.io/quickstart/server#python">Quick start mcp</a></p> <p><a href="https://idiallo.com/blog/zipbomb-protection">Zip Bomb server protection</a></p> <p><a href="https://thenewstack.io/mcp-is-rss-for-ai-more-use-cases-for-model-context-protocol/">don’t just red docs, also talk to them</a></p> <ul> <li>Interesting, pretty undeniable use case for LLMs that&rsquo;s effective</li> </ul> <p><a href="https://blog.askesis.pl/post/2017/04/how-to-debug-zsh-startup-time.html">zprof</a></p> <p><a href="https://github.com/aws/aws-toolkit-vscode/commit/1294b38b7fade342cfcbaf7cf80e2e5096ea1f9c">Letting Q run wild</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/07_19_2025/ Sat, 19 Jul 2025 00:00:00 +0000 /learnedt1w/2025/07_19_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://erisa.dev/exposing-a-web-service-with-cloudflare-tunnel/">Cloudflare Tunnels interesting to check out</a></p> <p><a href="https://www.makingsoftware.com/chapters/how-a-screen-works">How a screen works</a></p> <p><a href="https://evanhahn.com/local-llms-versus-offline-wikipedia/">Local LLM</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://finance.yahoo.com/news/amazon-kuiper-satellites-boost-rival-222610835.html">Is this a “we are not a monopoly” play?</a></p> <p><a href="https://paulkedrosky.com/honey-ai-capex-ate-the-economy/">AI Capex</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.nature.com/articles/d41586-025-00961-z">New Anti-biotic</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://erisa.dev/exposing-a-web-service-with-cloudflare-tunnel/">Cloudflare Tunnels interesting to check out</a></p> <p><a href="https://www.makingsoftware.com/chapters/how-a-screen-works">How a screen works</a></p> <p><a href="https://evanhahn.com/local-llms-versus-offline-wikipedia/">Local LLM</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://finance.yahoo.com/news/amazon-kuiper-satellites-boost-rival-222610835.html">Is this a “we are not a monopoly” play?</a></p> <p><a href="https://paulkedrosky.com/honey-ai-capex-ate-the-economy/">AI Capex</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.nature.com/articles/d41586-025-00961-z">New Anti-biotic</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/07_12_2025/ Sat, 12 Jul 2025 00:00:00 +0000 /learnedt1w/2025/07_12_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Put Doom on a Peloton:</p> <ul> <li>Found the Wifi Debugging screen</li> <li>Downloaded Android SDK Platform-Tools and used <a href="https://developer.android.com/tools/adb">adb</a> to connect and inspect the android tablet. <code>./adp pair and then ./adp connect</code> and <code> ./adb shell</code> to get a shell</li> <li>Can even take a screenshot and pull it back onto my computer <code>screencap /sdcard/myscreen.png</code> &amp; <code>./adb pull /sdcard/myscreen.png</code></li> <li>I side loaded Nova Launcher by downloading the <a href="https://en.wikipedia.org/wiki/Apk_%28file_format%29">.apk</a> and using <code>./adb install</code></li> <li>Then for doom, I found another .apk for Doom and grabbed <a href="https://doomwiki.org/wiki/DOOM1.WAD">doom1.wad</a> from the Doom wiki. Pushed the .wad to a new doom directory I created on the tablet <code>./adb push doom1.wad /sdcard/Doom/</code> and then installed the doom apk.</li> </ul> <p>And then we had doom:</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Put Doom on a Peloton:</p> <ul> <li>Found the Wifi Debugging screen</li> <li>Downloaded Android SDK Platform-Tools and used <a href="https://developer.android.com/tools/adb">adb</a> to connect and inspect the android tablet. <code>./adp pair and then ./adp connect</code> and <code> ./adb shell</code> to get a shell</li> <li>Can even take a screenshot and pull it back onto my computer <code>screencap /sdcard/myscreen.png</code> &amp; <code>./adb pull /sdcard/myscreen.png</code></li> <li>I side loaded Nova Launcher by downloading the <a href="https://en.wikipedia.org/wiki/Apk_%28file_format%29">.apk</a> and using <code>./adb install</code></li> <li>Then for doom, I found another .apk for Doom and grabbed <a href="https://doomwiki.org/wiki/DOOM1.WAD">doom1.wad</a> from the Doom wiki. Pushed the .wad to a new doom directory I created on the tablet <code>./adb push doom1.wad /sdcard/Doom/</code> and then installed the doom apk.</li> </ul> <p>And then we had doom:</p> <p><img src="/images/Doom-min.png" alt="Doom"></p> <p><a href="https://everything.curl.dev/how-to-read.html">Everything curl!</a></p> <p><a href="https://en.wikipedia.org/wiki/Dig_%28command%29">Dig</a></p> <p><code>uname -a</code> to get operating system info</p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p>When the <a href="https://www.coinbase.com/creditcard">Credit Cards</a> start <a href="https://crypto.com/us/cards">rolling</a> out you know Crypto is BACK!</p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/07_05_2025/ Sat, 05 Jul 2025 00:00:00 +0000 /learnedt1w/2025/07_05_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://blog.mgdproductions.com/ikko-activebuds/">What&rsquo;s security for anyway?</a></p> <p><a href="https://tailscale.com/blog/how-nat-traversal-works">How NAT Traversal Works</a> - Let’s say you’re making your own protocol and that you want NAT traversal. The protocol should be based on UDP. - For UDP, the rule is very simple: the firewall allows an inbound UDP packet if it previously saw a matching outbound packet. - The problems start when two of our “clients” want to talk directly. Now the firewalls are facing each other. According to the rule we established above, this means both sides must go first, but also that neither can go first. - So, to traverse these multiple stateful firewalls, we need to share some information to get underway: the peers have to know in advance the ip:port their counterpart is using. Tailscale has set up a <a href="https://tailscale.com/blog/how-tailscale-works#the-control-plane-key-exchange-and-coordination">coordination server</a> for this purpose - Stateful firewalls have limited memory, meaning that we need periodic communication to keep connections alive. If no packets are seen for a while (a common value for UDP is 30 seconds), the firewall forgets about the session, and we have to start over. To avoid this, we use a timer and must either send packets regularly to reset the timers, or have some out-of-band way of restarting the connection on demand. - The most common use of SNAT is to connect many devices to the internet, using fewer IP addresses than the number of devices. In the case of consumer-grade routers, we map all devices onto a single public-facing IP address. - the same principle applies on corporate networks. The usual difference there is that the NAT layer consists of multiple machines (for high availability or capacity reasons), and they can have more than one public IP address, so that they have more public ip:port combinations to choose from and can sustain more active clients at once. - STUN relies on a simple observation: when you talk to a server on the internet from a NATed client, the server sees the public ip:port that your NAT device created for you, not your LAN ip:port. So, the server can tell you what ip:port it saw. That way, you know what traffic from your LAN ip:port looks like on the internet</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://blog.mgdproductions.com/ikko-activebuds/">What&rsquo;s security for anyway?</a></p> <p><a href="https://tailscale.com/blog/how-nat-traversal-works">How NAT Traversal Works</a> - Let’s say you’re making your own protocol and that you want NAT traversal. The protocol should be based on UDP. - For UDP, the rule is very simple: the firewall allows an inbound UDP packet if it previously saw a matching outbound packet. - The problems start when two of our “clients” want to talk directly. Now the firewalls are facing each other. According to the rule we established above, this means both sides must go first, but also that neither can go first. - So, to traverse these multiple stateful firewalls, we need to share some information to get underway: the peers have to know in advance the ip:port their counterpart is using. Tailscale has set up a <a href="https://tailscale.com/blog/how-tailscale-works#the-control-plane-key-exchange-and-coordination">coordination server</a> for this purpose - Stateful firewalls have limited memory, meaning that we need periodic communication to keep connections alive. If no packets are seen for a while (a common value for UDP is 30 seconds), the firewall forgets about the session, and we have to start over. To avoid this, we use a timer and must either send packets regularly to reset the timers, or have some out-of-band way of restarting the connection on demand. - The most common use of SNAT is to connect many devices to the internet, using fewer IP addresses than the number of devices. In the case of consumer-grade routers, we map all devices onto a single public-facing IP address. - the same principle applies on corporate networks. The usual difference there is that the NAT layer consists of multiple machines (for high availability or capacity reasons), and they can have more than one public IP address, so that they have more public ip:port combinations to choose from and can sustain more active clients at once. - STUN relies on a simple observation: when you talk to a server on the internet from a NATed client, the server sees the public ip:port that your NAT device created for you, not your LAN ip:port. So, the server can tell you what ip:port it saw. That way, you know what traffic from your LAN ip:port looks like on the internet</p> <p><a href="https://en.m.wikipedia.org/wiki/Internet_Stream_Protocol">IPv5</a></p> <p><a href="https://blog.cloudflare.com/the-road-to-quic/">Pros/Cons of QUIC</a></p> <p><a href="https://en.wikipedia.org/wiki/WireGuard">Wireguard uses only UDP</a> due in part to the <a href="https://en.wikipedia.org/wiki/Tunneling_protocol#TCP_meltdown_problem">TCP Meltdown Problem</a>. Creator of Wireguard&rsquo;s <a href="https://www.jasondonenfeld.com/">website</a> is pretty wild</p> <p><a href="https://en.wikipedia.org/wiki/Port_forwarding">Port Forwarding</a></p> <p><a href="https://www.passwordstore.org/">UNIX password manager</a></p> <p><a href="https://github.com/boldsoftware/sketch?tab=readme-ov-file">Sketch starts a docker container and outputs its work onto a branch in your host git repository.</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://doctorow.medium.com/social-quitting-1ce85b67b456">enshittification</a></p> <ul> <li>But network effects cut both ways. If a system gets more valuable as it attracts more users, it also gets less valuable as it sheds users. The less valuable a system is to you, the easier it is to leave.</li> <li>When switching costs are high, services can be changed in ways that you dislike without losing your business. The higher the switching costs, the more a company can abuse you, because it knows that as bad as they’ve made things for you, you’d have to endure worse if you left.</li> </ul> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.google.com/intl/en/ipv6/statistics.html">IPv6 Adoption</a></p> <p><a href="https://crawshaw.io/blog/remembering-the-lan">Third, I need to help new programmers who never got to experience simple, pleasurable programming in a safe environment understand that programming can be fun.</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/06_28_2025/ Sat, 28 Jun 2025 00:00:00 +0000 /learnedt1w/2025/06_28_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.folklore.org/Negative_2000_Lines_Of_Code.html">Bad measures</a></p> <p><a href="https://stackoverflow.com/questions/58972251/what-does-x-packages-are-looking-for-funding-mean-when-running-npm-install">What NPM Fund means</a></p> <p>View ipv4/v6 Route tables: <code>netstat -r</code></p> <p>Typically for ISPs give out more than a /64 for ipv6 so people can have multiple networks (/60 or /56 possibly) /64 only allows for one ipv6 network so if you were to have multiple vlans at home you’d have some issues with a /64</p> <p><a href="https://jamesmcm.github.io/blog/no-ipv4/">IPv4</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.detroitnews.com/story/news/local/detroit-city/2025/06/27/witnesses-helicopter-dropped-thousands-of-dollars-onto-gratiot-avenue-detroit-michigan/84391286007/">Dropping thousands of dollars on peoples head from a helicopter</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.folklore.org/Negative_2000_Lines_Of_Code.html">Bad measures</a></p> <p><a href="https://stackoverflow.com/questions/58972251/what-does-x-packages-are-looking-for-funding-mean-when-running-npm-install">What NPM Fund means</a></p> <p>View ipv4/v6 Route tables: <code>netstat -r</code></p> <p>Typically for ISPs give out more than a /64 for ipv6 so people can have multiple networks (/60 or /56 possibly) /64 only allows for one ipv6 network so if you were to have multiple vlans at home you’d have some issues with a /64</p> <p><a href="https://jamesmcm.github.io/blog/no-ipv4/">IPv4</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.detroitnews.com/story/news/local/detroit-city/2025/06/27/witnesses-helicopter-dropped-thousands-of-dollars-onto-gratiot-avenue-detroit-michigan/84391286007/">Dropping thousands of dollars on peoples head from a helicopter</a></p> <p><a href="https://en.m.wikipedia.org/wiki/Simpson%27s_paradox">Simpsons Paradox</a></p> <p><a href="https://www.birdsandblooms.com/birding/attracting-hummingbirds/hummingbird-heart-rate/">Facts about hummingbirds</a></p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://en.m.wikipedia.org/wiki/Tetration">Tetration!</a> &amp;&amp; <a href="https://en.m.wikipedia.org/wiki/Pentation">Pentation!</a></p> <p><a href="https://brainstellar.com/">Fun logic puzzles</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://en.wikipedia.org/wiki/Pink_fairy_armadillo">Pink fairy armadillo</a></p> /learnedt1w/2025/06_21_2025/ Sat, 21 Jun 2025 00:00:00 +0000 /learnedt1w/2025/06_21_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://docs.aws.amazon.com/redshift/latest/dg/hyperloglog-overview.html">HyperLogLog in Redshift</a></p> <p><a href="https://docs.snowflake.com/en/user-guide/tables-hybrid">OLTP Snowflake</a></p> <p><a href="https://www.youtube.com/watch?v=dnWqYjrlV1g">In Clickhouse primary keys do not represent a unique row, it represents the sort order of how data is stored in the file system for merge tree tables</a></p> <p><a href="https://www.youtube.com/watch?v=_Pqfjer8-O4">Cool Animations</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.justice.gov/opa/pr/usaid-official-and-three-corporate-executives-plead-guilty-decade-long-bribery-scheme">A touch of bribery</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.youtube.com/watch?v=3yDoFJx0P3w">Rattlesnakes of Arizona</a></p> <p><a href="https://thehustle.co/why-its-nearly-impossible-to-buy-an-original-bob-ross-painting">Bob is hard to come by</a>_</p> <h2 id="mathstats">Math/Stats</h2> <p>Geometric distribution: If you&rsquo;ve flipped 10 tails in a row, you&rsquo;re NOT &ldquo;due&rdquo; for heads. The next flip is still 50/50.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://docs.aws.amazon.com/redshift/latest/dg/hyperloglog-overview.html">HyperLogLog in Redshift</a></p> <p><a href="https://docs.snowflake.com/en/user-guide/tables-hybrid">OLTP Snowflake</a></p> <p><a href="https://www.youtube.com/watch?v=dnWqYjrlV1g">In Clickhouse primary keys do not represent a unique row, it represents the sort order of how data is stored in the file system for merge tree tables</a></p> <p><a href="https://www.youtube.com/watch?v=_Pqfjer8-O4">Cool Animations</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.justice.gov/opa/pr/usaid-official-and-three-corporate-executives-plead-guilty-decade-long-bribery-scheme">A touch of bribery</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.youtube.com/watch?v=3yDoFJx0P3w">Rattlesnakes of Arizona</a></p> <p><a href="https://thehustle.co/why-its-nearly-impossible-to-buy-an-original-bob-ross-painting">Bob is hard to come by</a>_</p> <h2 id="mathstats">Math/Stats</h2> <p>Geometric distribution: If you&rsquo;ve flipped 10 tails in a row, you&rsquo;re NOT &ldquo;due&rdquo; for heads. The next flip is still 50/50.</p> <p>Exponential distribution : If you&rsquo;ve waited 20 minutes for the bus, the next minute is just as likely to bring the bus as the first minute was.</p> <p>Binomial Number of successes in n trials How many heads in 10 coin flips? Geometric Number of trials until first success</p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/06_14_2025/ Sat, 14 Jun 2025 00:00:00 +0000 /learnedt1w/2025/06_14_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <p><a href="https://sketch.dev/blog/agent-loop">The for Loop</a></p> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.sec.gov/Archives/edgar/data/1018724/000119312505070440/dex991.htm">Free cash flow</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.grandviewresearch.com/industry-analysis/us-bottled-water-market-report">I just don&rsquo;t get it</a></p> <p><a href="https://www.bbc.com/news/articles/cgq3j5nq15wo.amp">Politics!</a></p> <p><a href="https://alternativeto.net/">Site for finding alternatives</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <p><a href="https://sketch.dev/blog/agent-loop">The for Loop</a></p> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.sec.gov/Archives/edgar/data/1018724/000119312505070440/dex991.htm">Free cash flow</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.grandviewresearch.com/industry-analysis/us-bottled-water-market-report">I just don&rsquo;t get it</a></p> <p><a href="https://www.bbc.com/news/articles/cgq3j5nq15wo.amp">Politics!</a></p> <p><a href="https://alternativeto.net/">Site for finding alternatives</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/06_07_2025/ Sat, 07 Jun 2025 00:00:00 +0000 /learnedt1w/2025/06_07_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.youtube.com/watch?v=bhpzTWtee2A">Race Conditions</a></p> <ul> <li>I like this definition of atomic: The capability of performing an uninterrupted update with valid data before and after the update and the data cannot be observed by another observer in any intermediate state it may take on during the update. It may be a single bit or it may be an entire database. S/O ACID!</li> </ul> <p><a href="https://en.wikipedia.org/wiki/Semaphore_%28programming%29">Semaphore</a></p> <p><a href="https://www.postgresql.org/docs/current/tutorial-transactions.html">I was unaware of <code>SAVEPOINT</code> and <code>ROLLBACK TO</code></a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.youtube.com/watch?v=bhpzTWtee2A">Race Conditions</a></p> <ul> <li>I like this definition of atomic: The capability of performing an uninterrupted update with valid data before and after the update and the data cannot be observed by another observer in any intermediate state it may take on during the update. It may be a single bit or it may be an entire database. S/O ACID!</li> </ul> <p><a href="https://en.wikipedia.org/wiki/Semaphore_%28programming%29">Semaphore</a></p> <p><a href="https://www.postgresql.org/docs/current/tutorial-transactions.html">I was unaware of <code>SAVEPOINT</code> and <code>ROLLBACK TO</code></a></p> <p><a href="https://www.postgresql.org/docs/devel/parser-stage.html">The reason for separating raw parsing from semantic analysis is that system catalog lookups can only be done within a transaction, and we do not wish to start a transaction immediately upon receiving a query string.</a></p> <p><a href="https://www.ducktyped.org/p/a-mini-book-on-aws-networking-introduction">Greate overview on AWS networking, linking all sub-sections as well</a></p> <ul> <li><a href="https://www.ducktyped.org/p/why-is-it-called-a-cloud-if-its-not">VPC</a></li> </ul> <ul> <li>Everyone gets their own private network inside AWS.</li> <li>Solves IP address conflicts and security concerns of one big shared network</li> <li><strong>Mapping service</strong> connects instances in a single VPC across servers (kind of like a namespace) -The Mapping service can connect servers across AZs but not Regions, VPC span AZs not regions. To connect VPCs in different regions there&rsquo;s <a href="https://docs.aws.amazon.com/whitepapers/latest/building-scalable-secure-multi-vpc-network-infrastructure/vpc-to-vpc-connectivity.html">VPC peering</a> or <a href="https://docs.aws.amazon.com/whitepapers/latest/building-scalable-secure-multi-vpc-network-infrastructure/transit-gateway.html">AWS Transit Gateway</a></li> </ul> <ul> <li><a href="https://www.ducktyped.org/p/old-man-yells-at-subnets">Subnets</a></li> </ul> <ul> <li>An <strong>internet gateway</strong> is like a hole you poke in your VPC so you can talk to the internet.</li> <li>Only a subnet can be connected to the internet gateway.</li> <li>A <strong>subnet</strong> is a way to group your instances. It&rsquo;s sort of like tagging them.</li> <li><strong>Private subnets</strong> can&rsquo;t talk to the internet and are the default. <strong>Public subnets</strong> can talk to the internet.</li> <li>Subnets are availability zone-scoped. To create an instance, we need to specify which availability zone we want to create the instance in.</li> <li>A <strong>route</strong> is a connection from your subnet to the internet gateway so that your subnet can talk to the internet.</li> </ul> <ul> <li><a href="https://www.ducktyped.org/p/the-cidr-house-rules">CIDR</a></li> </ul> <ul> <li>Classless Inter-Domain Routing (IP address allocation)</li> <li>Specifies a range of IP addresses by fixing a certain number of bits in a 32 bit IP Address 172.98.0.1/24 (/24 denote the # of bits that are fixed)</li> <li>Each VPC will have a CIDR range, and each subnet within a VPC will have their own ranges within the VPC&rsquo;s range</li> </ul> <ul> <li><a href="https://www.ducktyped.org/p/an-illustrated-guide-to-route-tables">Route Tables</a></li> </ul> <ul> <li>Route tables are mappings from destination to target, given a destination where to a go next (target)</li> <li>Route tables will always try to match the most specific route.</li> <li>Route tables are created at the VPC level. Every VPC comes with a route table, called the main route table. A VPC can have many route tables</li> <li>all subnets are associated with the main route table by default</li> </ul> <ul> <li><a href="https://www.ducktyped.org/p/an-illustrated-guide-to-aws-security">Security Groups</a></li> </ul> <ul> <li>Security groups operate at the firewall (or EC2 instance) level (They have IB &amp; OB rules), they are ALLOW only</li> <li>IB traffic is allowed if its a response to your request (This is why SG are referred to as stateful)</li> <li>NACLs operate at the network (or subnet) level (They are used to BLOCK an IP(s))</li> </ul> <p><a href="https://datahacker.blog/industry/technology-menu/networking/netmask-filtering-deep-dive">Netmask</a></p> <p>Routers can assign private IPs from several private IP address ranges. They are addresses that start with 10.x.x.x, like 10.0.0.1; addresses that start with 192.168.x.x, like 192.168.10.1 and 192.168.12.1; and IPs in the 172.16.0.0 - 172.31.255.255 range.</p> <p>RFC 6598 defines a Shared Address Space, specifically the 100.64.0.0/10 block, for use by Internet Service Providers (ISPs) in their Carrier-Grade NAT (CGNAT) deployments. This address space is reserved for connecting Customer Premises Equipment (CPE) to the ISP&rsquo;s core routers.</p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.ssp.sh/">Cool blog and public brain concept to explore</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Suggestion from my Korean Uber Driver: Seoraksan national park go in sept/oct</p> <p>Spent the week in Seattle for our team Summit</p> <h2 id="other">Other</h2> /learnedt1w/2025/05_31_2025/ Sat, 31 May 2025 00:00:00 +0000 /learnedt1w/2025/05_31_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://duckdb.org/2025/05/27/ducklake">Duck Lake!</a></p> <p><a href="https://simonbyrne.github.io/notes/fastmath/">Dangers of a certain compiler flag</a></p> <p><a href="https://github.com/ossu/computer-science">Complete CS Education, I wonder how many LLMs have trained on this</a></p> <p><a href="https://www.liquidweb.com/blog/what-is-a-progressive-jpeg/">A progressive JPEG will actually show the entire image right away, the image will load in at full size looking pixelated and will become more clear as it loads.</a></p> <p><a href="https://bsky.app/profile/randomascii.bsky.social/post/3lk4c6st7nc2e">O(n^2) is the sweet spot of badly scaling algorithms</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.m.wikipedia.org/wiki/Economy_of_Poland">Poland Economy larger than I thought</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://duckdb.org/2025/05/27/ducklake">Duck Lake!</a></p> <p><a href="https://simonbyrne.github.io/notes/fastmath/">Dangers of a certain compiler flag</a></p> <p><a href="https://github.com/ossu/computer-science">Complete CS Education, I wonder how many LLMs have trained on this</a></p> <p><a href="https://www.liquidweb.com/blog/what-is-a-progressive-jpeg/">A progressive JPEG will actually show the entire image right away, the image will load in at full size looking pixelated and will become more clear as it loads.</a></p> <p><a href="https://bsky.app/profile/randomascii.bsky.social/post/3lk4c6st7nc2e">O(n^2) is the sweet spot of badly scaling algorithms</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.m.wikipedia.org/wiki/Economy_of_Poland">Poland Economy larger than I thought</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Went to Olympic National park for 5 days for my birthday.</p> <h2 id="other">Other</h2> /learnedt1w/2025/05_24_2025/ Sat, 24 May 2025 00:00:00 +0000 /learnedt1w/2025/05_24_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://techcommunity.microsoft.com/blog/adforpostgresql/announcing-a-new-ide-for-postgresql-in-vs-code-from-microsoft/4414648">Nice IDE for Postgres</a></p> <p><a href="https://github.com/open-spaced-repetition/fsrs4anki/wiki/ABC-of-FSRS">FSRS, I want to do create flash cards from the section of the blog</a></p> <p><a href="https://simonwillison.net/2025/May/15/building-on-llms/">Building on LLMs Handbook</a></p> <p><a href="https://bernsteinbear.com/blog/simple-search/">Implementing Search</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.lux.camera/what-is-hdr/">HDR</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://techcommunity.microsoft.com/blog/adforpostgresql/announcing-a-new-ide-for-postgresql-in-vs-code-from-microsoft/4414648">Nice IDE for Postgres</a></p> <p><a href="https://github.com/open-spaced-repetition/fsrs4anki/wiki/ABC-of-FSRS">FSRS, I want to do create flash cards from the section of the blog</a></p> <p><a href="https://simonwillison.net/2025/May/15/building-on-llms/">Building on LLMs Handbook</a></p> <p><a href="https://bernsteinbear.com/blog/simple-search/">Implementing Search</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.lux.camera/what-is-hdr/">HDR</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/05_17_2025/ Sat, 17 May 2025 00:00:00 +0000 /learnedt1w/2025/05_17_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.scrapehero.com/location-reports/McDonalds-USA/">Mcdonalds data</a></p> <ul> <li>everything&rsquo;s a $100</li> </ul> <p><a href="https://www.apolloacademy.com/the-daily-spark/">Interesting daily econ tidbits</a></p> <ul> <li>364 Walmarts in China!?</li> <li><a href="https://corporate.walmart.com/about/location-facts">Turns out there are Walmart&rsquo;s in 19 countries</a>, and 2.1MM associates wow</li> </ul> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.scrapehero.com/location-reports/McDonalds-USA/">Mcdonalds data</a></p> <ul> <li>everything&rsquo;s a $100</li> </ul> <p><a href="https://www.apolloacademy.com/the-daily-spark/">Interesting daily econ tidbits</a></p> <ul> <li>364 Walmarts in China!?</li> <li><a href="https://corporate.walmart.com/about/location-facts">Turns out there are Walmart&rsquo;s in 19 countries</a>, and 2.1MM associates wow</li> </ul> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/05_10_2025/ Sat, 10 May 2025 00:00:00 +0000 /learnedt1w/2025/05_10_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.youtube.com/watch?v=32O0a6qCQaQ">Linux Tools</a></p> <p><a href="https://0dependencies.dev/">0 Deps</a></p> <ul> <li>Can&rsquo;t say I 100% agree but can&rsquo;t say I 100% disagree, there&rsquo;s probably some happy medium here on when to use deps.</li> </ul> <p><a href="https://www.json.org/json-en.html">JSON dictionary</a></p> <p><a href="https://www.youtube.com/watch?v=jB13kCmWT2k">Infra at Palantir</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://en.wikipedia.org/wiki/Seagull_management">Seagull management</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.lloydmarkle.com/quieter-life/2024/appearing-confident/">Appearing confidant</a> <a href="https://skincontact.substack.com/p/21-observations-from-people-watching">Observations from watching people</a></p> <ul> <li>I like how this is written but I don&rsquo;t think we have some omniscient writer who can quickly define a person 100% correctly</li> </ul> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.youtube.com/watch?v=32O0a6qCQaQ">Linux Tools</a></p> <p><a href="https://0dependencies.dev/">0 Deps</a></p> <ul> <li>Can&rsquo;t say I 100% agree but can&rsquo;t say I 100% disagree, there&rsquo;s probably some happy medium here on when to use deps.</li> </ul> <p><a href="https://www.json.org/json-en.html">JSON dictionary</a></p> <p><a href="https://www.youtube.com/watch?v=jB13kCmWT2k">Infra at Palantir</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://en.wikipedia.org/wiki/Seagull_management">Seagull management</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.lloydmarkle.com/quieter-life/2024/appearing-confident/">Appearing confidant</a> <a href="https://skincontact.substack.com/p/21-observations-from-people-watching">Observations from watching people</a></p> <ul> <li>I like how this is written but I don&rsquo;t think we have some omniscient writer who can quickly define a person 100% correctly</li> </ul> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/05_03_2025/ Sat, 03 May 2025 00:00:00 +0000 /learnedt1w/2025/05_03_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Docker relies on Linux kernels, which means that macOS and Windows cannot run Docker natively without some additional steps. Each operating system has its own solution for running Docker. For example, Docker for Mac uses under the hood actually a virtual machine that runs a Linux instance, within which Docker operates.</p> <ul> <li> <p>It seems you can <a href="https://gist.github.com/BretFisher/5e1a0c7bcca4c735e716abf62afad389">get a shell</a> on this VM via: <code>docker run -it --privileged --pid=host debian nsenter -t 1 -m -u -n -i sh</code></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Docker relies on Linux kernels, which means that macOS and Windows cannot run Docker natively without some additional steps. Each operating system has its own solution for running Docker. For example, Docker for Mac uses under the hood actually a virtual machine that runs a Linux instance, within which Docker operates.</p> <ul> <li> <p>It seems you can <a href="https://gist.github.com/BretFisher/5e1a0c7bcca4c735e716abf62afad389">get a shell</a> on this VM via: <code>docker run -it --privileged --pid=host debian nsenter -t 1 -m -u -n -i sh</code></p> </li> <li> <p><code>docker run -d -i -t --name {give it a name} {image}</code> Finds/Pulls image, runs a container, -i for interactive, -t for a shell, -d for detached <code>docker pull {image}</code> to pull in an image</p> </li> <li> <p><code>docker logs -f {name of container}</code> to get container logs</p> </li> <li> <p><code>docker pause {name of container}</code> &amp;&amp; <code>docker unpause {name of container}</code> pause/unpause container; there&rsquo;s also <code>docker container start</code> and <code>docker container stop</code></p> </li> <li> <p><code>docker attach --no-stdin {name of container}</code> attach your terminal&rsquo;s stdout/stderr to a running container the &ndash;no-stdin flag meas we will not attach with std-in, so if you CTRL+C you&rsquo;re only disconnected form STDOUT</p> </li> <li> <p><code>docker exec {name of container} {command}</code> Execute commands inside a running container</p> </li> <li> <p><code>docker rm --force looper</code> stops/removes a running container, basically: <code>docker kill</code> + <code>docker rm</code></p> </li> <li> <p><code>docker search {image}</code> search images on docker&rsquo;s servers. Images consist of: registry/organisation/image:tag. But may be as short as ubuntu, then the registry will default to Docker hub, organisation to library and tag to latest</p> </li> </ul> <p>ls containers even after they&rsquo;ve exited: <code>docker container ls -a</code> or just <code>docker ps -a</code></p> <p>Remove all stopped containers with <code>docker container prune</code> and for images: <code>docker rmi -f $(docker images -aq) </code></p> <p>Flags: -i (interactive), -t (tty) and -d and <a href="https://itsfoss.com/what-is-tty-in-linux/">What is TTY</a></p> <p>A <a href="https://docs.docker.com/reference/dockerfile/">dockerfile</a> contains the build instructions for an image</p> <p>Quite a few popular images are so-called multi platform images which means that one image contains variations for different architectures, one example is Ubuntu.</p> <p><a href="https://idiallo.com/blog/zipbomb-protection">Zip Bomb</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://fortune.com/article/nail-salon-employee-pleads-guilty-remote-work-it-north-korea-china-kim-jong-un/">Remote work at its finest</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://github.com/Harren06/ublock-yt-shorts">Block YT shorts</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=56pS1dUwFt4">Porsche!</a></p> <p><a href="https://quarter--mile.com/You-Could-Just-Choose-Optimism">Picking Optimism</a></p> /learnedt1w/2025/04_26_2025/ Sat, 26 Apr 2025 00:00:00 +0000 /learnedt1w/2025/04_26_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://davepeck.org/2025/04/11/pythons-new-t-strings/">T-Strings</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.businessinsider.com/donald-rumsfeld-absolutely-no-idea-if-he-paid-taxes-properly-2014-4">On the ridiculousness of the tax code</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Spent the week in Japan, had an amazing time. Will record what I did in the travel section.</p> <h2 id="other">Other</h2> <p>Do a trip with friends at least once per year. Biggest lesson from Rob who I rode with in Kiryu.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://davepeck.org/2025/04/11/pythons-new-t-strings/">T-Strings</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.businessinsider.com/donald-rumsfeld-absolutely-no-idea-if-he-paid-taxes-properly-2014-4">On the ridiculousness of the tax code</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Spent the week in Japan, had an amazing time. Will record what I did in the travel section.</p> <h2 id="other">Other</h2> <p>Do a trip with friends at least once per year. Biggest lesson from Rob who I rode with in Kiryu.</p> /learnedt1w/2025/04_19_2025/ Sat, 19 Apr 2025 00:00:00 +0000 /learnedt1w/2025/04_19_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://github.com/KoKuToru/de-pixelate_gaV-O6NPWrI?tab=readme-ov-file">Unpixelate</a></p> <p><a href="https://pgdog.dev/blog/hacking-postgres-wire-protocol">PG wire</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://kumarletter.com/posts/electric-propulsion-s-dirty-secret-why-lithium-can-t-fly-or-float-profitably">Battery powered profits not quite there</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Flew to Japan, and now I&rsquo;m in Ota City, Japan!</p> <h2 id="other">Other</h2> <p><a href="https://earthscience.stackexchange.com/questions/16528/what-are-the-farthest-time-zone-locations#:~:text=You%20can%20see%20that%20the,a%20Wednesday%20in%20Line%20Islands">Furthest Time zones</a></p> <p><a href="https://facts.usps.com/mailing-potatoes/">Mailing Potatoes</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://github.com/KoKuToru/de-pixelate_gaV-O6NPWrI?tab=readme-ov-file">Unpixelate</a></p> <p><a href="https://pgdog.dev/blog/hacking-postgres-wire-protocol">PG wire</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://kumarletter.com/posts/electric-propulsion-s-dirty-secret-why-lithium-can-t-fly-or-float-profitably">Battery powered profits not quite there</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Flew to Japan, and now I&rsquo;m in Ota City, Japan!</p> <h2 id="other">Other</h2> <p><a href="https://earthscience.stackexchange.com/questions/16528/what-are-the-farthest-time-zone-locations#:~:text=You%20can%20see%20that%20the,a%20Wednesday%20in%20Line%20Islands">Furthest Time zones</a></p> <p><a href="https://facts.usps.com/mailing-potatoes/">Mailing Potatoes</a></p> /learnedt1w/2025/04_12_2025/ Sat, 12 Apr 2025 00:00:00 +0000 /learnedt1w/2025/04_12_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://crocidb.com/post/kernel-adventures/demystifying-the-shebang/">#! - interesting/tidbits</a></p> <p><a href="https://www.openwall.com/lists/oss-security/2025/04/01/1">https://www.openwall.com/lists/oss-security/2025/04/01/1</a></p> <p><a href="https://en.wikipedia.org/wiki/Billion_laughs_attack">Billion lol attack</a></p> <p><a href="https://medium.com/@samcrawford/what-s-up-with-airbnb-s-slow-loading-photos-56db484b10fc">Old article on airbnb photo loading</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://simone.org/advertising/">Should we make advertising illegal?</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Posting this from Tokyo after 27 hours of travel #dedication</p> <p><a href="https://youtu.be/ADXX4fmWHbo?si=ce1t10JYyMbK3TPU">https://youtu.be/ADXX4fmWHbo?si=ce1t10JYyMbK3TPU</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://crocidb.com/post/kernel-adventures/demystifying-the-shebang/">#! - interesting/tidbits</a></p> <p><a href="https://www.openwall.com/lists/oss-security/2025/04/01/1">https://www.openwall.com/lists/oss-security/2025/04/01/1</a></p> <p><a href="https://en.wikipedia.org/wiki/Billion_laughs_attack">Billion lol attack</a></p> <p><a href="https://medium.com/@samcrawford/what-s-up-with-airbnb-s-slow-loading-photos-56db484b10fc">Old article on airbnb photo loading</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://simone.org/advertising/">Should we make advertising illegal?</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Posting this from Tokyo after 27 hours of travel #dedication</p> <p><a href="https://youtu.be/ADXX4fmWHbo?si=ce1t10JYyMbK3TPU">https://youtu.be/ADXX4fmWHbo?si=ce1t10JYyMbK3TPU</a></p> /learnedt1w/2025/04_05_2025/ Sat, 05 Apr 2025 00:00:00 +0000 /learnedt1w/2025/04_05_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <p><a href="https://newslttrs.com/yes-in-the-1980s-we-downloaded-games-from-the-radio/">Downloading games from the radio</a> it&rsquo;s cool to read about these times as I&rsquo;ve never gotten to experience this.</p> <p><a href="https://oldvcr.blogspot.com/2025/04/the-april-fools-joke-that-might-have.html?m=1">April Fools</a></p> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://sherwood.news/tech/direct-appeal-sundar-pichai-ceo-alphabet-fix-google-finance-stock-charts/">Google Finance&rsquo;s broken feature</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.science.org/content/blog-post/things-i-won-t-work-dioxygen-difluoride">Hilarious post on a vary volatile compound</a></p> <p><a href="https://www.youtube.com/watch?v=y7VtSK23_Jg">Awesome Chess Project</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <p><a href="https://newslttrs.com/yes-in-the-1980s-we-downloaded-games-from-the-radio/">Downloading games from the radio</a> it&rsquo;s cool to read about these times as I&rsquo;ve never gotten to experience this.</p> <p><a href="https://oldvcr.blogspot.com/2025/04/the-april-fools-joke-that-might-have.html?m=1">April Fools</a></p> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://sherwood.news/tech/direct-appeal-sundar-pichai-ceo-alphabet-fix-google-finance-stock-charts/">Google Finance&rsquo;s broken feature</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.science.org/content/blog-post/things-i-won-t-work-dioxygen-difluoride">Hilarious post on a vary volatile compound</a></p> <p><a href="https://www.youtube.com/watch?v=y7VtSK23_Jg">Awesome Chess Project</a></p> /learnedt1w/2025/03_29_2025/ Sat, 29 Mar 2025 00:00:00 +0000 /learnedt1w/2025/03_29_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://docs.astral.sh/uv/">Exploring</a> <code>UV</code></p> <ul> <li>You can run a tool in an ephemeral environment <code>uvx pycowsay 'hello world!'</code></li> <li><code>uvx</code> is an alias for <code>uv tool run</code></li> <li>install different python versions <code>uv python install 3.10 3.11 3.12</code> and pin them in a directory <code>uv python pin 3.11</code>; however, by default, Python versions are automatically downloaded as needed without using uv python install</li> <li>The .python-version file can be used to create a default Python version request. uv searches for a .python-version file in the working directory and each of its parents. If none is found, uv will check the user-level configuration directory.</li> <li>Executes standalone scripts with <code>run</code>. <code>echo &quot;print(2+2)&quot; &gt; example.py | uv run example.py</code></li> <li><code>uv pip freeze:</code> List installed packages and their versions.</li> </ul> <p><a href="https://oldmanprogrammer.net/source.php?dir=projects/tree">Cool project to visualize directory structure with</a> <code>tree</code></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://docs.astral.sh/uv/">Exploring</a> <code>UV</code></p> <ul> <li>You can run a tool in an ephemeral environment <code>uvx pycowsay 'hello world!'</code></li> <li><code>uvx</code> is an alias for <code>uv tool run</code></li> <li>install different python versions <code>uv python install 3.10 3.11 3.12</code> and pin them in a directory <code>uv python pin 3.11</code>; however, by default, Python versions are automatically downloaded as needed without using uv python install</li> <li>The .python-version file can be used to create a default Python version request. uv searches for a .python-version file in the working directory and each of its parents. If none is found, uv will check the user-level configuration directory.</li> <li>Executes standalone scripts with <code>run</code>. <code>echo &quot;print(2+2)&quot; &gt; example.py | uv run example.py</code></li> <li><code>uv pip freeze:</code> List installed packages and their versions.</li> </ul> <p><a href="https://oldmanprogrammer.net/source.php?dir=projects/tree">Cool project to visualize directory structure with</a> <code>tree</code></p> <p><a href="https://inventwithpython.com/recursion/chapter1.html">Fun introduction to Recursion</a> from Al Sweigart</p> <p><a href="https://utcc.utoronto.ca/~cks/space/blog/programming/GitUpdatingLocalChangesWithMore">Updating local commits with more changes</a></p> <p><a href="https://docs.aws.amazon.com/redshift/latest/dg/pattern-matching-conditions-posix.html">Redshift Posix Operators</a><code>~</code> And A <code>~~ </code>is a synonym for LIKE. Pretty cool, had no idea!</p> <p><a href="https://www.kalzumeus.com/2010/06/17/falsehoods-programmers-believe-about-names/">Falsehoods Programmers Believe About Names</a>, tried to read this in the Japanese translation and I can&rsquo;t!</p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=mhr3REshTss">Companion Planting</a> French Marigold seems to ward off pests!?</p> /learnedt1w/2025/03_22_2025/ Sat, 22 Mar 2025 00:00:00 +0000 /learnedt1w/2025/03_22_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>git stash list</code> list git stashes and then you can drop via: <code>git stash drop stash@{0}</code> <a href="https://git-scm.com/docs/git-stash">git stash</a></p> <p><a href="https://www.youtube.com/watch?v=-PZPydgfqO0">REPL stands for Read Evaluate Print Loop</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.m.wikipedia.org/wiki/Air_brake_%28road_vehicle%29">How air breaks work</a>. Essentially uses pressurized air instead of hydraulic fluid. Comes with the benefit of being &ldquo;on&rdquo; if the system breaks causing the vehicle to break&hellip; which has the tradeoff of making them difficult to move.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>git stash list</code> list git stashes and then you can drop via: <code>git stash drop stash@{0}</code> <a href="https://git-scm.com/docs/git-stash">git stash</a></p> <p><a href="https://www.youtube.com/watch?v=-PZPydgfqO0">REPL stands for Read Evaluate Print Loop</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.m.wikipedia.org/wiki/Air_brake_%28road_vehicle%29">How air breaks work</a>. Essentially uses pressurized air instead of hydraulic fluid. Comes with the benefit of being &ldquo;on&rdquo; if the system breaks causing the vehicle to break&hellip; which has the tradeoff of making them difficult to move.</p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/03_15_2025/ Sat, 15 Mar 2025 00:00:00 +0000 /learnedt1w/2025/03_15_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://duckdb.org/2025/03/12/duckdb-ui">Duckdb with the&hellip; UI</a></p> <p><a href="https://computing.help.inf.ed.ac.uk/FAQ/whats-tarball-or-how-do-i-unpack-or-create-tgz-or-targz-file">Tarball</a></p> <p><a href="https://www.jooq.org/doc/latest/manual/sql-building/sql-statements/merge-statement/">Merge Statements</a></p> <p><a href="https://blog.gitbutler.com/going-down-the-rabbit-hole-of-gits-new-bundle-uri/">Git Bundle + CDNs and such</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://sherwood.news/business/while-no-ones-buying-homes-rockets-buying-redfin/?utm_source=snacks&amp;utm_medium=email&amp;utm_campaign=snacks_20250311&amp;utm_content=479d6222d14000808da35026a1b44efe">Redfin getting acquired</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://facts.usps.com/map/#fact969">The largest ZIP Code, in square miles, in the contiguous U.S. is 30,683 square miles.</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Traveling to LA and Santa Barbara to visit Ben for his Spring Break.</p> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=MglSoMaXCOM">I don&rsquo;t take sides I take pictures</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://duckdb.org/2025/03/12/duckdb-ui">Duckdb with the&hellip; UI</a></p> <p><a href="https://computing.help.inf.ed.ac.uk/FAQ/whats-tarball-or-how-do-i-unpack-or-create-tgz-or-targz-file">Tarball</a></p> <p><a href="https://www.jooq.org/doc/latest/manual/sql-building/sql-statements/merge-statement/">Merge Statements</a></p> <p><a href="https://blog.gitbutler.com/going-down-the-rabbit-hole-of-gits-new-bundle-uri/">Git Bundle + CDNs and such</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://sherwood.news/business/while-no-ones-buying-homes-rockets-buying-redfin/?utm_source=snacks&amp;utm_medium=email&amp;utm_campaign=snacks_20250311&amp;utm_content=479d6222d14000808da35026a1b44efe">Redfin getting acquired</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://facts.usps.com/map/#fact969">The largest ZIP Code, in square miles, in the contiguous U.S. is 30,683 square miles.</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Traveling to LA and Santa Barbara to visit Ben for his Spring Break.</p> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=MglSoMaXCOM">I don&rsquo;t take sides I take pictures</a></p> /learnedt1w/2025/03_08_2025/ Sat, 08 Mar 2025 00:00:00 +0000 /learnedt1w/2025/03_08_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>DuckDB has a <a href="https://duckdb.org/docs/stable/sql/functions/char.html">bar function</a> which draws a band whose width is proportional to (x - min) and equal to width characters when x = max.</p> <p>You could also implement this in other DBMS with ratio_to_report() and <a href="https://docs.aws.amazon.com/redshift/latest/dg/r_REPEAT.html">repeat()</a>&hellip; repeat I hadn&rsquo;t heard about until this week.</p> <p>There&rsquo;s some other fun ones in Redshift like <a href="https://docs.aws.amazon.com/redshift/latest/dg/r_INITCAP.html">initcap()</a> which capitalizes the first letter of each word.</p> <p>Postgres has nice docs on <a href="https://www.postgresql.org/docs/current/datatype-character.html#DATATYPE-CHARACTER">Character Types</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>DuckDB has a <a href="https://duckdb.org/docs/stable/sql/functions/char.html">bar function</a> which draws a band whose width is proportional to (x - min) and equal to width characters when x = max.</p> <p>You could also implement this in other DBMS with ratio_to_report() and <a href="https://docs.aws.amazon.com/redshift/latest/dg/r_REPEAT.html">repeat()</a>&hellip; repeat I hadn&rsquo;t heard about until this week.</p> <p>There&rsquo;s some other fun ones in Redshift like <a href="https://docs.aws.amazon.com/redshift/latest/dg/r_INITCAP.html">initcap()</a> which capitalizes the first letter of each word.</p> <p>Postgres has nice docs on <a href="https://www.postgresql.org/docs/current/datatype-character.html#DATATYPE-CHARACTER">Character Types</a></p> <blockquote> <p>There is no performance difference among these three types, apart from increased storage space when using the blank-padded type, and a few extra CPU cycles to check the length when storing into a length-constrained column. While character(n) has performance advantages in some other database systems, there is no such advantage in PostgreSQL; in fact character(n) is usually the slowest of the three because of its additional storage costs. In most situations text or character varying should be used instead.</p></blockquote> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.science.org/doi/full/10.1126/sciadv.ads1560?af=R">Age and Cognitive Skills</a>.</p> <blockquote> <p>First, average skills increase strongly into the forties before decreasing slightly in literacy and more strongly in numeracy. Second, skills decline at older ages only for those with below-average skill usage.</p></blockquote> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>We hosted two gatherings at our house in Tucson this week. On Thursday, I used the charcoal grill I got for Christmas for the first time, cooking two tri-tips and four new york strips. A few tips on charcoal grilling:</p> <ul> <li> <p>A chimney is critical to getting the coals lit, and you need to get a decent fire underneath the coals to really get them going</p> </li> <li> <p>You can throw more coals on already lit coals if you need to, but this will come at the cost of more smoke/flames</p> </li> <li> <p>Try to leave the lid on as MUCH as possible as the temperature drops significantly when it comes off.</p> </li> <li> <p>Start off with more coals then you need and create hot/cold zones by pushing the coals to one side and moving them around as needed. Just use a meat thermometer to take the guess work out of &ldquo;doneness&rdquo;</p> </li> </ul> <p>On Saturday, I made a bourbon braised chuck roast using seven lbs of chuck. We were going to watch a movie outside, but it was really cold so we played games inside.</p> <h2 id="other">Other</h2> <p>Reminds me of that famous tombstone inscription: &ldquo;I told you I was sick!&rdquo;</p> <p>&ldquo;It is easier to fool a man than to explain to him that he was fooled.&rdquo;  (Mark Twain)</p> <p><a href="https://en.wikipedia.org/wiki/The_Conversation">The Conversation</a> was good R.I.P Gene Hackman</p> /learnedt1w/2025/03_01_2025/ Sat, 01 Mar 2025 00:00:00 +0000 /learnedt1w/2025/03_01_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <ul> <li>Mac: To quickly find text, select some text and press ⌘E followed by ⌘G.</li> <li>After copying a file, press ⌥⌘V to move the file instead of pasting a copy of it.</li> </ul> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://setosa.io/ev/markov-chains/">Markov Chains</a></p> <ul> <li>One use of Markov chains is to include real-world phenomena in computer simulations. For example, we might want to check how frequently a new dam will overflow, which depends on the number of rainy days in a row.</li> </ul> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Went camping this weekend at <a href="https://deadhorseranchstatepark.com/">Dead Horse Ranch State Park</a> in Cottonwood, AZ. We drove through Prescott and up Mingus Mountain on Saturday and did a short hike to the fire tower. I was originally thinking of <a href="https://www.strava.com/routes/3329876699188615902">riding up Mingus Mountain from Cottonwood</a>, but I&rsquo;m glad I didn&rsquo;t as there is no shoulder and very tight turns. We drove down to Cottonwood through <a href="https://en.wikipedia.org/wiki/Jerome,_Arizona">Jerome, AZ</a> which I&rsquo;d like to go back and visit.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <ul> <li>Mac: To quickly find text, select some text and press ⌘E followed by ⌘G.</li> <li>After copying a file, press ⌥⌘V to move the file instead of pasting a copy of it.</li> </ul> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://setosa.io/ev/markov-chains/">Markov Chains</a></p> <ul> <li>One use of Markov chains is to include real-world phenomena in computer simulations. For example, we might want to check how frequently a new dam will overflow, which depends on the number of rainy days in a row.</li> </ul> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Went camping this weekend at <a href="https://deadhorseranchstatepark.com/">Dead Horse Ranch State Park</a> in Cottonwood, AZ. We drove through Prescott and up Mingus Mountain on Saturday and did a short hike to the fire tower. I was originally thinking of <a href="https://www.strava.com/routes/3329876699188615902">riding up Mingus Mountain from Cottonwood</a>, but I&rsquo;m glad I didn&rsquo;t as there is no shoulder and very tight turns. We drove down to Cottonwood through <a href="https://en.wikipedia.org/wiki/Jerome,_Arizona">Jerome, AZ</a> which I&rsquo;d like to go back and visit.</p> <p><img src="/images/FireTower.JPG" alt="Fire Tower"></p> <p>After stopping for some sushi at Safeway, we made it to the park and met up with our friends. It was very windy during the day and the trees were all hibernating. We walked around the three lagoons and headed back to the site to to hang out and start dinner. We cooked up hotdogs and smash burgers, chatted for a while, and made s&rsquo;mores. There were showers directly across from out site and we got everything ready to go to bed.</p> <p>Ally and I set up our tent on top of a raised platform. Our camping site happened to be the handicapped site so while most sites had a small plot of dirt on the ground for a tent, ours was raised off the ground about 12 inches by this small platform. As everyone was going to bed, I had secured all the food in our car or left it in a secured bag that animals couldn&rsquo;t get into. We had some dirty dishes which I put in a trash bag and put in the car as well. For some unknown reason I decided that leaving a cooler containing steaks with no lid on it outside would be fine even after putting everything else away&hellip; I was very wrong.</p> <p>Around 1am, I believe some skunks got into the cooler and were able to tear open a package containing steaks. A little later on, we believe there was a skunk fight over said steaks&hellip; this fight occurred <strong>directly next to our tent</strong> on the platform. It was a quick but loud skirmish that woke up Ally and I, everyone else was sleeping in their cars completely unbothered. The skirmish smelled awful but with no further noise and the smell being subdued by the wind or our olfactory fatigue, we tried to go back to sleep.</p> <p>This was short lived, as we were quickly awakened to more snarling noises right by our tent. I was fed up and it was 2am, so I put my shoes on to go face down whatever was outside. Opening the tent and pointing it at the noises a saw nothing&hellip; because the skunk was directly beneath the tent under the platform! I investigated the cooler and saw what happened to our meat. I cleaned up the mess packed this into the car. I pounded on the platform tried to through rocks underneath to get the skunk to leave; however, this seemed to result in more noises and smells. I couldn&rsquo;t even get a good look at the thing as it was mostly dirt and rocks underneath the platform it was impossible to see clear under it.</p> <p>We grabbed our sleeping bags and shifted to the car, unfortunately this also smelled like skunk (possibly it was just us or how the wind was blowing). I ended up driving us away from the site to a parking lot and getting a few hours of sleep there.</p> <p>That was a wild night, but we still had fun although we are certainly a bit more tired than we need to be. I&rsquo;m going to have to soak the tent to get the skunk smell off of it as it to the brunt of the skunk spray I believe.</p> <p>Fun times!</p> <p>Booked trip to Japan, I&rsquo;ve got a 9 day streak on Duo Lingo now&hellip; Japanese is hard!</p> <ul> <li><a href="https://www.acquired.fm/episodes/why-duolingo-worked-with-luis-von-ahn-ceo">Good ACQ2 episode</a> with Luis von Ahn.</li> </ul> <h2 id="other">Other</h2> <p><a href="https://www.goodthoughts.blog/p/beneficentrism?utm_source=substack&amp;utm_medium=email">Beneficentrism</a></p> <ul> <li>It&rsquo;s just the claim that it&rsquo;s really important to help others—however distant or different from us they may be.</li> </ul> /learnedt1w/2025/02_22_2025/ Sat, 22 Feb 2025 00:00:00 +0000 /learnedt1w/2025/02_22_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>To initialize a submodule in a local repo: <code>git submodule init</code> which reads from .gitmodules and then <code>git submodule update</code></p> <p><a href="https://www.pyspur.dev/blog/introduction_cuda_programming">Nice intro to cuda with embedded quiz</a></p> <p><a href="https://medium.com/@jairus-m/docker-uv-a-streamlined-approach-to-managing-local-dagster-environments-dd55e0e90b3a">Docker &amp; UV in Dagster</a></p> <p><a href="https://posthog.com/blog/secrets-of-posthog-query-performance">Click house query performance</a></p> <p><a href="https://www.dynamodbguide.com/key-concepts/">Guide yourself to a relation db?&hellip; JK it has its place</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://lcamtuf.substack.com/p/but-good-sir-what-is-electricity">Electricity</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>San Diego for a friends engagement last weekend, was a good time. I hate driving in San Diego.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>To initialize a submodule in a local repo: <code>git submodule init</code> which reads from .gitmodules and then <code>git submodule update</code></p> <p><a href="https://www.pyspur.dev/blog/introduction_cuda_programming">Nice intro to cuda with embedded quiz</a></p> <p><a href="https://medium.com/@jairus-m/docker-uv-a-streamlined-approach-to-managing-local-dagster-environments-dd55e0e90b3a">Docker &amp; UV in Dagster</a></p> <p><a href="https://posthog.com/blog/secrets-of-posthog-query-performance">Click house query performance</a></p> <p><a href="https://www.dynamodbguide.com/key-concepts/">Guide yourself to a relation db?&hellip; JK it has its place</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://lcamtuf.substack.com/p/but-good-sir-what-is-electricity">Electricity</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>San Diego for a friends engagement last weekend, was a good time. I hate driving in San Diego.</p> <h2 id="other">Other</h2> <p><a href="https://www.scientificamerican.com/article/broken-legs-and-ankles-heal-better-if-you-walk-on-them-within-weeks/">Broken Legs heal faster if you walk on them</a></p> /learnedt1w/2025/02_15_2025/ Sat, 15 Feb 2025 00:00:00 +0000 /learnedt1w/2025/02_15_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Got back from Hawaii on a red-eye and then the next day drove to San Diego for a friends proposal. Brought my bike and road the coast with Ally which was pretty sweet.</p> <h2 id="other">Other</h2> <p>Reading a bit of <a href="https://www.amazon.com/Invisible-Influence-Hidden-Forces-Behavior/dp/1476759731">Invisible Influence</a>:</p> <ul> <li>The more something matters to us the more distinctive we think it is.</li> <li>Mimicking people (subtly) makes you seem more agreeable/appealing.</li> </ul> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Got back from Hawaii on a red-eye and then the next day drove to San Diego for a friends proposal. Brought my bike and road the coast with Ally which was pretty sweet.</p> <h2 id="other">Other</h2> <p>Reading a bit of <a href="https://www.amazon.com/Invisible-Influence-Hidden-Forces-Behavior/dp/1476759731">Invisible Influence</a>:</p> <ul> <li>The more something matters to us the more distinctive we think it is.</li> <li>Mimicking people (subtly) makes you seem more agreeable/appealing.</li> </ul> /learnedt1w/2025/02_08_2025/ Sat, 08 Feb 2025 00:00:00 +0000 /learnedt1w/2025/02_08_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Some light Wikpedia reading on db normalization: <a href="https://en.wikipedia.org/wiki/Boyce%E2%80%93Codd_normal_form">Boyce–Codd normal form (BCNF or 3.5NF)</a></p> <ul> <li>If a relational schema is in BCNF, then all redundancy based on functional dependency has been removed</li> <li>A 3NF table that does not have multiple overlapping candidate keys is guaranteed to be in BCNF <a href="https://en.wikipedia.org/wiki/Elementary_key_normal_form">Elementary key normal form</a> <a href="https://en.wikipedia.org/wiki/Functional_dependency">Functional Dependencies</a></li> <li>A dependency FD: X → Y means that the values of Y are determined by the values of X. Two tuples sharing the same values of X will necessarily have the same values of Y. <a href="https://en.wikipedia.org/wiki/Candidate_key">Candidate Keys</a></li> <li>A candidate key, or simply a key, of a relational database is any set of columns that have a unique combination of values in each row, with the additional constraint that removing any column could produce duplicate combinations of values.</li> <li>A candidate key is a minimal superkey,[1] i.e., a superkey that does not contain a smaller one. <a href="https://en.wikipedia.org/wiki/Superkey">Super Key</a></li> <li>A superkey is any set of attributes that uniquely identifies each tuple of a relation. The set of all attributes is always a superkey (the trivial superkey).</li> </ul> <p>Committing to submodule:</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Some light Wikpedia reading on db normalization: <a href="https://en.wikipedia.org/wiki/Boyce%E2%80%93Codd_normal_form">Boyce–Codd normal form (BCNF or 3.5NF)</a></p> <ul> <li>If a relational schema is in BCNF, then all redundancy based on functional dependency has been removed</li> <li>A 3NF table that does not have multiple overlapping candidate keys is guaranteed to be in BCNF <a href="https://en.wikipedia.org/wiki/Elementary_key_normal_form">Elementary key normal form</a> <a href="https://en.wikipedia.org/wiki/Functional_dependency">Functional Dependencies</a></li> <li>A dependency FD: X → Y means that the values of Y are determined by the values of X. Two tuples sharing the same values of X will necessarily have the same values of Y. <a href="https://en.wikipedia.org/wiki/Candidate_key">Candidate Keys</a></li> <li>A candidate key, or simply a key, of a relational database is any set of columns that have a unique combination of values in each row, with the additional constraint that removing any column could produce duplicate combinations of values.</li> <li>A candidate key is a minimal superkey,[1] i.e., a superkey that does not contain a smaller one. <a href="https://en.wikipedia.org/wiki/Superkey">Super Key</a></li> <li>A superkey is any set of attributes that uniquely identifies each tuple of a relation. The set of all attributes is always a superkey (the trivial superkey).</li> </ul> <p>Committing to submodule:</p> <ul> <li>cd into submodule, add changes, commit and then <code>git push</code></li> <li>cd .. out and back to parent repository, add sub modules directory, commit and push</li> </ul> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Spent the week in Hawaii which I&rsquo;ll write a post on in the outdoors section.</p> <h2 id="other">Other</h2> /learnedt1w/2025/02_01_2025/ Sat, 01 Feb 2025 00:00:00 +0000 /learnedt1w/2025/02_01_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>To obtain only the remote URL of a local repo: <code>git config --get remote.origin.url</code></p> <p>Can also remove and add a new origin: <code>git remote remove origin</code> <code>git remote add origin</code></p> <p><a href="https://explain.dalibo.com/">Nice explain plan visualizer</a></p> <p><a href="https://www.ftc.gov/news-events/news/press-releases/2025/01/ftc-takes-action-against-godaddy-alleged-lax-data-security-its-website-hosting-services">Go Daddy infosec issues</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.newsweek.com/irs-auction-tekashi-6ix9ine-jewelry-sale-2024493">IRS auctions</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>To obtain only the remote URL of a local repo: <code>git config --get remote.origin.url</code></p> <p>Can also remove and add a new origin: <code>git remote remove origin</code> <code>git remote add origin</code></p> <p><a href="https://explain.dalibo.com/">Nice explain plan visualizer</a></p> <p><a href="https://www.ftc.gov/news-events/news/press-releases/2025/01/ftc-takes-action-against-godaddy-alleged-lax-data-security-its-website-hosting-services">Go Daddy infosec issues</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.newsweek.com/irs-auction-tekashi-6ix9ine-jewelry-sale-2024493">IRS auctions</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> /learnedt1w/2025/01_25_2025/ Sat, 25 Jan 2025 00:00:00 +0000 /learnedt1w/2025/01_25_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://pete.ex-parrot.com/upside-down-ternet.html">Splitting network into two subnets to make life miserable for wifi stealers</a></p> <p>Redshift max recursion rows is defaults to 50,000,000 <code>SHOW max_recursion_rows;</code>. Seems like this is actual recursion count not rows&hellip; Testing out with the following code:</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-SQL" data-lang="SQL"><span style="display:flex;"><span><span style="color:#66d9ef">WITH</span> <span style="color:#66d9ef">RECURSIVE</span> digits(d) <span style="color:#66d9ef">AS</span> ( </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">1</span> <span style="color:#66d9ef">AS</span> d </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">2</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">3</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">4</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">5</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">6</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">7</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">8</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">9</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">0</span> </span></span><span style="display:flex;"><span>), </span></span><span style="display:flex;"><span> integers(i) <span style="color:#66d9ef">AS</span> ( </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">SELECT</span> d <span style="color:#66d9ef">FROM</span> digits </span></span><span style="display:flex;"><span> <span style="color:#75715e">/* */</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> </span></span><span style="display:flex;"><span> <span style="color:#75715e">/* */</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">SELECT</span> i <span style="color:#f92672">+</span> <span style="color:#ae81ff">1</span> <span style="color:#66d9ef">AS</span> next_i </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">FROM</span> integers </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">WHERE</span> i <span style="color:#f92672">&lt;</span> <span style="color:#ae81ff">50000800</span> </span></span><span style="display:flex;"><span>) </span></span><span style="display:flex;"><span><span style="color:#66d9ef">SELECT</span> <span style="color:#66d9ef">min</span>(i), <span style="color:#66d9ef">max</span>(i), <span style="color:#66d9ef">COUNT</span>(<span style="color:#f92672">*</span>) <span style="color:#66d9ef">FROM</span> integers; </span></span></code></pre></div><p>We get: min max count 0 50,000,800 500,007,965</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://pete.ex-parrot.com/upside-down-ternet.html">Splitting network into two subnets to make life miserable for wifi stealers</a></p> <p>Redshift max recursion rows is defaults to 50,000,000 <code>SHOW max_recursion_rows;</code>. Seems like this is actual recursion count not rows&hellip; Testing out with the following code:</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-SQL" data-lang="SQL"><span style="display:flex;"><span><span style="color:#66d9ef">WITH</span> <span style="color:#66d9ef">RECURSIVE</span> digits(d) <span style="color:#66d9ef">AS</span> ( </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">1</span> <span style="color:#66d9ef">AS</span> d </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">2</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">3</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">4</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">5</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">6</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">7</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">8</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">9</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">0</span> </span></span><span style="display:flex;"><span>), </span></span><span style="display:flex;"><span> integers(i) <span style="color:#66d9ef">AS</span> ( </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">SELECT</span> d <span style="color:#66d9ef">FROM</span> digits </span></span><span style="display:flex;"><span> <span style="color:#75715e">/* */</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> </span></span><span style="display:flex;"><span> <span style="color:#75715e">/* */</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">SELECT</span> i <span style="color:#f92672">+</span> <span style="color:#ae81ff">1</span> <span style="color:#66d9ef">AS</span> next_i </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">FROM</span> integers </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">WHERE</span> i <span style="color:#f92672">&lt;</span> <span style="color:#ae81ff">50000800</span> </span></span><span style="display:flex;"><span>) </span></span><span style="display:flex;"><span><span style="color:#66d9ef">SELECT</span> <span style="color:#66d9ef">min</span>(i), <span style="color:#66d9ef">max</span>(i), <span style="color:#66d9ef">COUNT</span>(<span style="color:#f92672">*</span>) <span style="color:#66d9ef">FROM</span> integers; </span></span></code></pre></div><p>We get: min max count 0 50,000,800 500,007,965</p> <p>And a small snippet of the results reveals an interesting pattern:</p> <table> <thead> <tr> <th>i</th> <th>rowcount</th> </tr> </thead> <tbody> <tr> <td>0</td> <td>1</td> </tr> <tr> <td>1</td> <td>2</td> </tr> <tr> <td>2</td> <td>3</td> </tr> <tr> <td>3</td> <td>4</td> </tr> <tr> <td>4</td> <td>5</td> </tr> <tr> <td>5</td> <td>6</td> </tr> <tr> <td>6</td> <td>7</td> </tr> <tr> <td>7</td> <td>8</td> </tr> <tr> <td>8</td> <td>9</td> </tr> <tr> <td>9</td> <td>10</td> </tr> <tr> <td>10</td> <td>10</td> </tr> <tr> <td>11</td> <td>10</td> </tr> <tr> <td>12</td> <td>10</td> </tr> <tr> <td>13</td> <td>10</td> </tr> <tr> <td>14</td> <td>10</td> </tr> <tr> <td>15</td> <td>10</td> </tr> <tr> <td>16</td> <td>10</td> </tr> <tr> <td>17</td> <td>10</td> </tr> <tr> <td>18</td> <td>10</td> </tr> <tr> <td>19</td> <td>10</td> </tr> <tr> <td>20</td> <td>10</td> </tr> <tr> <td>21</td> <td>10</td> </tr> </tbody> </table> <p>I wanted to test, how the initial set of numbers propagates and how new numbers are added in each iteration. I reduced the size of digits and added a static source column in integers to track over time.</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-SQL" data-lang="SQL"><span style="display:flex;"><span><span style="color:#75715e">-- Smaller exmaple multi-row set </span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span><span style="color:#66d9ef">WITH</span> <span style="color:#66d9ef">RECURSIVE</span> digits(d) <span style="color:#66d9ef">AS</span> ( </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">1</span> <span style="color:#66d9ef">AS</span> d </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">2</span> </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> <span style="color:#66d9ef">SELECT</span> <span style="color:#ae81ff">3</span> </span></span><span style="display:flex;"><span>), </span></span><span style="display:flex;"><span>integers(i, source_d) <span style="color:#66d9ef">AS</span> ( </span></span><span style="display:flex;"><span> <span style="color:#75715e">-- Base case: Add source_d to track where each number came from </span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span> <span style="color:#66d9ef">SELECT</span> d, d <span style="color:#66d9ef">FROM</span> digits </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">UNION</span> <span style="color:#66d9ef">ALL</span> </span></span><span style="display:flex;"><span> <span style="color:#75715e">-- Recursive case </span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span> <span style="color:#66d9ef">SELECT</span> i <span style="color:#f92672">+</span> <span style="color:#ae81ff">1</span>, source_d </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">FROM</span> integers </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">WHERE</span> i <span style="color:#f92672">&lt;</span> <span style="color:#ae81ff">10</span> </span></span><span style="display:flex;"><span>) </span></span><span style="display:flex;"><span><span style="color:#66d9ef">SELECT</span> </span></span><span style="display:flex;"><span> i, </span></span><span style="display:flex;"><span> <span style="color:#66d9ef">COUNT</span>(<span style="color:#f92672">*</span>) OVER (PARTITION <span style="color:#66d9ef">BY</span> i) <span style="color:#66d9ef">as</span> <span style="color:#66d9ef">row_count</span>, <span style="color:#75715e">-- How many rows we have for each value of i </span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span> source_d, <span style="color:#75715e">-- Where each number originated from </span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span> ROW_NUMBER() OVER (PARTITION <span style="color:#66d9ef">BY</span> i <span style="color:#66d9ef">ORDER</span> <span style="color:#66d9ef">BY</span> source_d) <span style="color:#66d9ef">as</span> row_num <span style="color:#75715e">-- The ordering within each i value </span></span></span><span style="display:flex;"><span><span style="color:#75715e"></span><span style="color:#66d9ef">FROM</span> integers </span></span><span style="display:flex;"><span><span style="color:#66d9ef">ORDER</span> <span style="color:#66d9ef">BY</span> i, source_d; </span></span></code></pre></div><table> <thead> <tr> <th style="text-align: left">i</th> <th style="text-align: left">row_count</th> <th style="text-align: left">source_d</th> <th style="text-align: left">row_num</th> </tr> </thead> <tbody> <tr> <td style="text-align: left">1</td> <td style="text-align: left">1</td> <td style="text-align: left">1</td> <td style="text-align: left">1</td> </tr> <tr> <td style="text-align: left">2</td> <td style="text-align: left">2</td> <td style="text-align: left">1</td> <td style="text-align: left">1</td> </tr> <tr> <td style="text-align: left">2</td> <td style="text-align: left">2</td> <td style="text-align: left">2</td> <td style="text-align: left">2</td> </tr> <tr> <td style="text-align: left">3</td> <td style="text-align: left">3</td> <td style="text-align: left">1</td> <td style="text-align: left">1</td> </tr> <tr> <td style="text-align: left">3</td> <td style="text-align: left">3</td> <td style="text-align: left">2</td> <td style="text-align: left">2</td> </tr> <tr> <td style="text-align: left">3</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> </tr> <tr> <td style="text-align: left">4</td> <td style="text-align: left">3</td> <td style="text-align: left">1</td> <td style="text-align: left">1</td> </tr> <tr> <td style="text-align: left">4</td> <td style="text-align: left">3</td> <td style="text-align: left">2</td> <td style="text-align: left">2</td> </tr> <tr> <td style="text-align: left">4</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> </tr> <tr> <td style="text-align: left">5</td> <td style="text-align: left">3</td> <td style="text-align: left">1</td> <td style="text-align: left">1</td> </tr> <tr> <td style="text-align: left">5</td> <td style="text-align: left">3</td> <td style="text-align: left">2</td> <td style="text-align: left">2</td> </tr> <tr> <td style="text-align: left">5</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> </tr> <tr> <td style="text-align: left">6</td> <td style="text-align: left">3</td> <td style="text-align: left">1</td> <td style="text-align: left">1</td> </tr> <tr> <td style="text-align: left">6</td> <td style="text-align: left">3</td> <td style="text-align: left">2</td> <td style="text-align: left">2</td> </tr> <tr> <td style="text-align: left">6</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> </tr> <tr> <td style="text-align: left">7</td> <td style="text-align: left">3</td> <td style="text-align: left">1</td> <td style="text-align: left">1</td> </tr> <tr> <td style="text-align: left">7</td> <td style="text-align: left">3</td> <td style="text-align: left">2</td> <td style="text-align: left">2</td> </tr> <tr> <td style="text-align: left">7</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> </tr> <tr> <td style="text-align: left">8</td> <td style="text-align: left">3</td> <td style="text-align: left">1</td> <td style="text-align: left">1</td> </tr> <tr> <td style="text-align: left">8</td> <td style="text-align: left">3</td> <td style="text-align: left">2</td> <td style="text-align: left">2</td> </tr> <tr> <td style="text-align: left">8</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> </tr> <tr> <td style="text-align: left">9</td> <td style="text-align: left">3</td> <td style="text-align: left">1</td> <td style="text-align: left">1</td> </tr> <tr> <td style="text-align: left">9</td> <td style="text-align: left">3</td> <td style="text-align: left">2</td> <td style="text-align: left">2</td> </tr> <tr> <td style="text-align: left">9</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> </tr> <tr> <td style="text-align: left">10</td> <td style="text-align: left">3</td> <td style="text-align: left">1</td> <td style="text-align: left">1</td> </tr> <tr> <td style="text-align: left">10</td> <td style="text-align: left">3</td> <td style="text-align: left">2</td> <td style="text-align: left">2</td> </tr> <tr> <td style="text-align: left">10</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> <td style="text-align: left">3</td> </tr> </tbody> </table> <p>I noticed:</p> <p>The row count grows until it equals the number of initial digits (3 in this case)</p> <p>So I guess there is an initial growth phase: i=1: 1 row (from digit 1) i=2: 2 rows (from digits 1,2) i=3: 3 rows (from digits 1,2,3)</p> <p>And then this stabilizes: i=4: 3 rows (maintains all 3 chains) So my mental model is that each individual initial digit is maintaining a chain of values: Starting Digits: 1, 2, 3</p> <p>Chain 1 (starting from 1): 1 -&gt; 2 -&gt; 3 -&gt; 4 -&gt; 5 -&gt; 6 -&gt; 7 -&gt; &hellip; ^ First chain always present</p> <p>Chain 2 (starting from 2): 2 -&gt; 3 -&gt; 4 -&gt; 5 -&gt; 6 -&gt; 7 -&gt; &hellip; ^ Second chain joins at i=2</p> <p>Chain 3 (starting from 3): 3 -&gt; 4 -&gt; 5 -&gt; 6 -&gt; 7 -&gt; &hellip; ^ Third chain joins at i=3 So for instance at i = 6: i=6: source_d=1, row_num=1 (from Chain 1) source_d=2, row_num=2 (from Chain 2) source_d=3, row_num=3 (from Chain 3)</p> <p><code>Each row at i=6 came from a different original chain, but they've all reached the value 6 through different paths of recursion.</code></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.politico.eu/article/france-warns-of-viagra-laced-erectile-honey-flooding-into-the-country/">Viagra laced contraband honey is pretty wild</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Work on what&rsquo;s most important not what&rsquo;s most urgent.</p> /learnedt1w/2025/01_18_2025/ Sat, 18 Jan 2025 00:00:00 +0000 /learnedt1w/2025/01_18_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://valatka.dev/2025/01/12/on-killer-uv-feature.html">uV is the way</a></p> <p><a href="https://wizardzines.com/comics/namespaces/">Cute namesapce Zine</a></p> <p><a href="https://discourse.getdbt.com/t/understanding-hash-joins-in-redshift-query-plan/122">Great explanation of a Hash Join from the cofounder of DBT back in 2018</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://singlelunch.com/2023/09/13/the-bad-economics-of-wtfhappenedin1971/">Bad Econ of WTF happened in 1971</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Since 1989, Kenny G&rsquo;s recording &ldquo;Going Home&rdquo; from the Kenny G Live album has become an unconventional mega-hit throughout China.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://valatka.dev/2025/01/12/on-killer-uv-feature.html">uV is the way</a></p> <p><a href="https://wizardzines.com/comics/namespaces/">Cute namesapce Zine</a></p> <p><a href="https://discourse.getdbt.com/t/understanding-hash-joins-in-redshift-query-plan/122">Great explanation of a Hash Join from the cofounder of DBT back in 2018</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://singlelunch.com/2023/09/13/the-bad-economics-of-wtfhappenedin1971/">Bad Econ of WTF happened in 1971</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Since 1989, Kenny G&rsquo;s recording &ldquo;Going Home&rdquo; from the Kenny G Live album has become an unconventional mega-hit throughout China.</p> /learnedt1w/2025/01_11_2025/ Sat, 11 Jan 2025 00:00:00 +0000 /learnedt1w/2025/01_11_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Symbolic Linking is pretty cool: <code>ln -s /Users/iamsam/Desktop/symlinkorigin.txt /Users/iamsam/Desktop/symlinkdest.txt</code> Can set up a file to point to another file&hellip;</p> <p><a href="https://xcancel.com/3blue1brown/status/1876291319955398799">Xcancel</a> is an instance of Nitter.</p> <p>Nitter is a free and open source alternative Twitter front-end focused on privacy and performance. The source is available on GitHub at <a href="https://github.com/zedeus/nitter">https://github.com/zedeus/nitter</a></p> <ul> <li>No JavaScript or ads</li> <li>All requests go through the backend, client never talks to Twitter</li> <li>Prevents Twitter from tracking your IP or JavaScript fingerprint</li> <li>Uses Twitter&rsquo;s unofficial API (no rate limits or developer account required)</li> <li>Lightweight (for @nim_lang, 60KB vs 784KB from twitter.com)</li> <li>RSS feeds</li> <li>Themes</li> <li>Mobile support (responsive design)</li> <li>AGPLv3 licensed, no proprietary instances permitted</li> </ul> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://x.com/joecarlsonshow/status/1875591249560007043">Texas Roadhouse Stock Market returns outpacing tech</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Symbolic Linking is pretty cool: <code>ln -s /Users/iamsam/Desktop/symlinkorigin.txt /Users/iamsam/Desktop/symlinkdest.txt</code> Can set up a file to point to another file&hellip;</p> <p><a href="https://xcancel.com/3blue1brown/status/1876291319955398799">Xcancel</a> is an instance of Nitter.</p> <p>Nitter is a free and open source alternative Twitter front-end focused on privacy and performance. The source is available on GitHub at <a href="https://github.com/zedeus/nitter">https://github.com/zedeus/nitter</a></p> <ul> <li>No JavaScript or ads</li> <li>All requests go through the backend, client never talks to Twitter</li> <li>Prevents Twitter from tracking your IP or JavaScript fingerprint</li> <li>Uses Twitter&rsquo;s unofficial API (no rate limits or developer account required)</li> <li>Lightweight (for @nim_lang, 60KB vs 784KB from twitter.com)</li> <li>RSS feeds</li> <li>Themes</li> <li>Mobile support (responsive design)</li> <li>AGPLv3 licensed, no proprietary instances permitted</li> </ul> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://x.com/joecarlsonshow/status/1875591249560007043">Texas Roadhouse Stock Market returns outpacing tech</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.uhaul.com/Articles/About/U-Haul-Growth-States-Of-2024-South-Carolina-Tops-List-for-First-Time-33083/">U Haul One way movers list</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://youtu.be/YZMk2pRk0D0?si=vCmGb5-MtK6HWh-F">figure 8 racing is wild</a></p> /learnedt1w/2025/01_04_2025/ Sat, 04 Jan 2025 00:00:00 +0000 /learnedt1w/2025/01_04_2025/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Couldn&rsquo;t find where Datagrip stores its live templates.</p> <p><code>find / -name templates</code> and it is here:</p> <p><code>/System/Volumes/Data/Users/my_user/Library/Application Support/JetBrains/DataGrip2024.1/templates</code> stored as xml.</p> <p>If you&rsquo;re striuggling to find your local templates you can use find from a parent directory <code>find / -name templates</code></p> <p><a href="https://www.construction-physics.com/p/how-to-build-a-20-billion-semiconductor">Great overview of all that goes into a fab</a></p> <p><a href="https://www.cs.cmu.edu/~pavlo/blog/2025/01/2024-databases-retrospective.html">Andy&rsquo;s overview of DBs in 2024</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://workhorse.com">I wasn’t familiar with this ev start up until now</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Couldn&rsquo;t find where Datagrip stores its live templates.</p> <p><code>find / -name templates</code> and it is here:</p> <p><code>/System/Volumes/Data/Users/my_user/Library/Application Support/JetBrains/DataGrip2024.1/templates</code> stored as xml.</p> <p>If you&rsquo;re striuggling to find your local templates you can use find from a parent directory <code>find / -name templates</code></p> <p><a href="https://www.construction-physics.com/p/how-to-build-a-20-billion-semiconductor">Great overview of all that goes into a fab</a></p> <p><a href="https://www.cs.cmu.edu/~pavlo/blog/2025/01/2024-databases-retrospective.html">Andy&rsquo;s overview of DBs in 2024</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://workhorse.com">I wasn’t familiar with this ev start up until now</a></p> <p><a href="https://x.com/alojoh/status/1869786972597956959">My 2025 prediction is that a Lucid or Rivian will foldthis year</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://www.econlib.org/library/Enc/Immigration.html">Interesting paper on immigration</a></p> <p><a href="https://practicapp.com/carbagepilot-part1/">Self driving 1993 Volvo</a></p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://mathstodon.xyz/@tao/113721192051328193">On sharing Rejection</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://allenpike.com/2024/an-unreasonable-amount-of-time">Sometimes magic is just someone spending more time on something than anyone else might reasonably expect.</a></p> <p>Damn, actually made it all the way through the end of the year doing this.</p> /learnedt1w/2024/12_28_2024/ Sat, 28 Dec 2024 00:00:00 +0000 /learnedt1w/2024/12_28_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://samwho.dev/turing-machines/">Turing Machines</a></p> <ul> <li>A system is Turing complete if it can be used to simulate a Turing machine.</li> </ul> <p>Don&rsquo;t throw any &ldquo;real time&rdquo; analysis on a shared resource. That resource will get backed up, your &ldquo;real time&rdquo; analysis running every hour will stack up in the que as the cluster slows, making the backlog worse, with a ton of work that is no longer real time.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://samwho.dev/turing-machines/">Turing Machines</a></p> <ul> <li>A system is Turing complete if it can be used to simulate a Turing machine.</li> </ul> <p>Don&rsquo;t throw any &ldquo;real time&rdquo; analysis on a shared resource. That resource will get backed up, your &ldquo;real time&rdquo; analysis running every hour will stack up in the que as the cluster slows, making the backlog worse, with a ton of work that is no longer real time.</p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.m.wikipedia.org/wiki/List_of_stadiums_by_capacity">North Korea with the largest stadium capacity</a></p> <p><a href="https://phys.org/news/2024-12-giant-sloths-mastodons-coexisted-humans.html">Giant Sloths</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://apple.news/AQMdk2LqeSEe6hxY06CW79A">So dumb, let people wear whatever they want</a></p> <p>Black pink is a K pop band a friend told me to check out. Not my thing but they have almost 100MM subs on Youtube.</p> /learnedt1w/2024/12_21_2024/ Sat, 21 Dec 2024 00:00:00 +0000 /learnedt1w/2024/12_21_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://marimo.io/">Better python notebooks</a></p> <p><a href="https://github.com/anvaka/map-of-github">Map of github</a></p> <p><a href="https://avi.im/blag/2024/sqlite-past-present-future/">Bloom Filters to speed up Joins in SQLite</a></p> <p><a href="https://samwho.dev/bloom-filters/">A good deep dive on Bloom Filters from Sam</a></p> <ul> <li>Bloom filters can give definite &ldquo;no&quot;s, but they can&rsquo;t be certain about &ldquo;yes.&rdquo;</li> <li>A bloom filter will never give a false-negative, and this is what makes them useful.</li> <li>Google&rsquo;s BigTable is a distributed key-value store, and uses bloom filters internally to know what keys are stored within. When a read request for a key comes in, a bloom filter in memory is first checked to see if the key is in the database. If not, BigTable can respond with &ldquo;not found&rdquo; without ever needing to read from disk. Sometimes the bloom filter will say a key might be in the database when it isn&rsquo;t, but this is fine because when that happens a disk access will confirm the key in fact isn&rsquo;t in the database.</li> </ul> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p><a href="https://en.wikipedia.org/wiki/Palau">Palau looks really cool</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://marimo.io/">Better python notebooks</a></p> <p><a href="https://github.com/anvaka/map-of-github">Map of github</a></p> <p><a href="https://avi.im/blag/2024/sqlite-past-present-future/">Bloom Filters to speed up Joins in SQLite</a></p> <p><a href="https://samwho.dev/bloom-filters/">A good deep dive on Bloom Filters from Sam</a></p> <ul> <li>Bloom filters can give definite &ldquo;no&quot;s, but they can&rsquo;t be certain about &ldquo;yes.&rdquo;</li> <li>A bloom filter will never give a false-negative, and this is what makes them useful.</li> <li>Google&rsquo;s BigTable is a distributed key-value store, and uses bloom filters internally to know what keys are stored within. When a read request for a key comes in, a bloom filter in memory is first checked to see if the key is in the database. If not, BigTable can respond with &ldquo;not found&rdquo; without ever needing to read from disk. Sometimes the bloom filter will say a key might be in the database when it isn&rsquo;t, but this is fine because when that happens a disk access will confirm the key in fact isn&rsquo;t in the database.</li> </ul> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p><a href="https://en.wikipedia.org/wiki/Palau">Palau looks really cool</a></p> <h2 id="other">Other</h2> <p>Got a bike a professional bike fit this week. Highlights how tiny changes in position can make a huge difference especially over thousands fo miles.</p> <p><a href="https://archive.boston.com/news/globe/magazine/articles/2007/08/19/bizarro_world/">Randomly finding the best tetris player in the world</a></p> <p><a href="https://genesenvironment.biomedcentral.com/articles/10.1186/s41021-018-0114-3">Radiation</a></p> <p><a href="https://www.amazon.com/Butchers-Crossing-Review-Books-Classics/dp/1590171985?tag=fogus-20&amp;dplnkId=16508552-1891-4dd5-93c9-bc02b666cd91&amp;nodl=1">Butcher&rsquo;s Crossing, adding to reading list</a></p> /learnedt1w/2024/12_14_2024/ Sat, 14 Dec 2024 00:00:00 +0000 /learnedt1w/2024/12_14_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://podcasts.apple.com/us/podcast/hannes-muhleisen-duckdb-deep-dive-the-challenges/id1676305617?i=1000680142303">DuckDB interview</a> &amp; cocaine fund.</p> <p><a href="http://sibervepunk.com/digital-consumption.html">You find yourself in a quest for productivity, feeling productive because of the quest, but not really doing any productive work.</a></p> <p><a href="https://stripe.com/blog/secret-life-of-dns">DNS rabbit hole Stripe Blog</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://medium.com/@tomwhitwell/52-things-i-learned-in-2024-75efffe44f15">Interesting things learned</a></p> <p><a href="https://www.npr.org/2022/07/31/1110882487/dod-slot-machines-overseas-bases">One thing I found particularly absurd</a></p> <p><a href="https://velo.outsideonline.com/road/road-training/explainer-the-pro-cycling-carbon-monoxide-controversy/">Inhaling carbon monoxide for performance</a></p> <p><a href="https://www.theguardian.com/world/2024/dec/10/scrabble-star-nigel-richards-wins-spanish-world-title-despite-not-speaking-spanish">Human brain is unreal</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://podcasts.apple.com/us/podcast/hannes-muhleisen-duckdb-deep-dive-the-challenges/id1676305617?i=1000680142303">DuckDB interview</a> &amp; cocaine fund.</p> <p><a href="http://sibervepunk.com/digital-consumption.html">You find yourself in a quest for productivity, feeling productive because of the quest, but not really doing any productive work.</a></p> <p><a href="https://stripe.com/blog/secret-life-of-dns">DNS rabbit hole Stripe Blog</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://medium.com/@tomwhitwell/52-things-i-learned-in-2024-75efffe44f15">Interesting things learned</a></p> <p><a href="https://www.npr.org/2022/07/31/1110882487/dod-slot-machines-overseas-bases">One thing I found particularly absurd</a></p> <p><a href="https://velo.outsideonline.com/road/road-training/explainer-the-pro-cycling-carbon-monoxide-controversy/">Inhaling carbon monoxide for performance</a></p> <p><a href="https://www.theguardian.com/world/2024/dec/10/scrabble-star-nigel-richards-wins-spanish-world-title-despite-not-speaking-spanish">Human brain is unreal</a></p> /learnedt1w/2024/12_07_2024/ Sat, 07 Dec 2024 00:00:00 +0000 /learnedt1w/2024/12_07_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.youtube.com/watch?v=M9HHWFp84f0">Great video on threading</a></p> <p><a href="https://spark.apache.org/docs/3.5.1/sql-ref-syntax-qry-select-clusterby.html">Cluster by, partition and sort</a> does not guarantee a total order of output.</p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Movies to Watch: Barry Lyndon, Casablanca, and Network.</p> <p>Went to chess club on Wednesday, played over the board for the first time in several years. I played a decent French Defense in my first game and ended up losing after miscalculating. I completely imploded when playing another guy losing three games quickly and even accidentally swapping the position of my king and queen when setting up the board. Over the board chess is a skill!</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://www.youtube.com/watch?v=M9HHWFp84f0">Great video on threading</a></p> <p><a href="https://spark.apache.org/docs/3.5.1/sql-ref-syntax-qry-select-clusterby.html">Cluster by, partition and sort</a> does not guarantee a total order of output.</p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Movies to Watch: Barry Lyndon, Casablanca, and Network.</p> <p>Went to chess club on Wednesday, played over the board for the first time in several years. I played a decent French Defense in my first game and ended up losing after miscalculating. I completely imploded when playing another guy losing three games quickly and even accidentally swapping the position of my king and queen when setting up the board. Over the board chess is a skill!</p> <p>Trying to a little better at gift giving this year, I&rsquo;m taking notes of things people want/need as they mention them and its working fairly well.</p> /learnedt1w/2024/11_30_2024/ Sat, 30 Nov 2024 00:00:00 +0000 /learnedt1w/2024/11_30_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://amzn-operations.slack.com/archives/D023C4J2F32/p1733068711179969">Iceburg</a></p> <p><a href="https://aws.amazon.com/about-aws/whats-new/2024/11/amazon-s3-functionality-conditional-writes/">S3 Conditional Writes</a></p> <p><a href="https://people.csail.mit.edu/kraska/pub/sigmod08-s3.pdf">S3 is a database</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Enjoyed spending time with family on Thanksgiving. Tried my best to do focus as much as possible with them and be off the phone. I worked a few days during the week but was very efficient with my time and made sure I stopped working and stayed not working through evenings and early mornings.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://amzn-operations.slack.com/archives/D023C4J2F32/p1733068711179969">Iceburg</a></p> <p><a href="https://aws.amazon.com/about-aws/whats-new/2024/11/amazon-s3-functionality-conditional-writes/">S3 Conditional Writes</a></p> <p><a href="https://people.csail.mit.edu/kraska/pub/sigmod08-s3.pdf">S3 is a database</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Enjoyed spending time with family on Thanksgiving. Tried my best to do focus as much as possible with them and be off the phone. I worked a few days during the week but was very efficient with my time and made sure I stopped working and stayed not working through evenings and early mornings.</p> <p>I bought my girlfirend a bicycle, we&rsquo;ve got it all set up now and I&rsquo;m really excited for her to come out and ride with me.</p> /learnedt1w/2024/11_23_2024/ Sat, 23 Nov 2024 00:00:00 +0000 /learnedt1w/2024/11_23_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Add line numbers to head: <code>head -n 5 example.csv | nl</code></p> <p><a href="https://github.com/rstudio/cheatsheets">R cheatsheets</a></p> <p><a href="https://www.youtube.com/watch?v=X8jsijhllIA">Hamming codes</a></p> <p>When using psql from the command line don&rsquo;t forget to end statements with a &lsquo;;&rsquo;.</p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.acquired.fm/episodes/ikea">Acquired Ikea episode</a></p> <p>“It is not all that difficult to reach set targets if you do not have to count the cost. Any designer can design a desk that will cost 5000 krona. But only the most skilled can design a good, functional desk that will cost 100 krona. Expensive solutions to any problem are usually the work of mediocrity. We have no respect for the solution until we know what it costs.&quot; &ndash; Ingvar Kamprad</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Add line numbers to head: <code>head -n 5 example.csv | nl</code></p> <p><a href="https://github.com/rstudio/cheatsheets">R cheatsheets</a></p> <p><a href="https://www.youtube.com/watch?v=X8jsijhllIA">Hamming codes</a></p> <p>When using psql from the command line don&rsquo;t forget to end statements with a &lsquo;;&rsquo;.</p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.acquired.fm/episodes/ikea">Acquired Ikea episode</a></p> <p>“It is not all that difficult to reach set targets if you do not have to count the cost. Any designer can design a desk that will cost 5000 krona. But only the most skilled can design a good, functional desk that will cost 100 krona. Expensive solutions to any problem are usually the work of mediocrity. We have no respect for the solution until we know what it costs.&quot; &ndash; Ingvar Kamprad</p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>“I would say that you have fallen into the commonest fallacy of all in dealing with social and economic subjects—the ‘devil theory.’ [&hellip;] You have attributed conditions to villainy that simply result from stupidity. [&hellip;] You think bankers are scoundrels. They are not. Nor are company officials, nor patrons, nor the governing classes back on earth. Men are constrained by necessity and build up rationalizations to account for their acts.” ― Robert A. Heinlein, Logic of Empire</p> /learnedt1w/2024/11_16_2024/ Sat, 16 Nov 2024 00:00:00 +0000 /learnedt1w/2024/11_16_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <p><a href="https://challahscript.com/what_i_wish_someone_told_me_about_postgres">Postgres knowledge dump</a></p> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://finance.yahoo.com/quote/MSTR/">$26BB of BTC $71BB market cap&hellip;</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://allthatsinteresting.com/glyptodon-fossils">Cool fossils</a> <a href="https://m.youtube.com/watch?v=Oex8W5aASJo">building a picnic table</a> I really enjoy Beau&rsquo;s videos.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <p><a href="https://challahscript.com/what_i_wish_someone_told_me_about_postgres">Postgres knowledge dump</a></p> <h2 id="software">Software</h2> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://finance.yahoo.com/quote/MSTR/">$26BB of BTC $71BB market cap&hellip;</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://allthatsinteresting.com/glyptodon-fossils">Cool fossils</a> <a href="https://m.youtube.com/watch?v=Oex8W5aASJo">building a picnic table</a> I really enjoy Beau&rsquo;s videos.</p> /learnedt1w/2024/11_09_2024/ Sat, 09 Nov 2024 00:00:00 +0000 /learnedt1w/2024/11_09_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Nice overview of <a href="https://medium.com/@buczynski.rafal/exploring-jq-a-guide-to-essential-techniques-and-tools-for-professionals-b9df9db490de">jq</a>, was using the aws emr cli to describe clusters so I could SSH into them <code>aws emr describe-cluster --cluster-id</code> and decided to use jq instead of <code>grep -i dns</code></p> <p>I guess you can <a href="https://docs.aws.amazon.com/athena/latest/ug/notebooks-spark.html">use spark</a> in Athena</p> <p><code>echo {1..10}</code> returns 1-10</p> <p><code>&lt; lines awk 'NR%2 == 0'</code> filtering raw lines out of text file with awk is pretty handy</p> <p><code>&lt; lines sample -r 10%</code> quick &ldquo;random&rdquo; sample</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Nice overview of <a href="https://medium.com/@buczynski.rafal/exploring-jq-a-guide-to-essential-techniques-and-tools-for-professionals-b9df9db490de">jq</a>, was using the aws emr cli to describe clusters so I could SSH into them <code>aws emr describe-cluster --cluster-id</code> and decided to use jq instead of <code>grep -i dns</code></p> <p>I guess you can <a href="https://docs.aws.amazon.com/athena/latest/ug/notebooks-spark.html">use spark</a> in Athena</p> <p><code>echo {1..10}</code> returns 1-10</p> <p><code>&lt; lines awk 'NR%2 == 0'</code> filtering raw lines out of text file with awk is pretty handy</p> <p><code>&lt; lines sample -r 10%</code> quick &ldquo;random&rdquo; sample</p> <p>In an <a href="https://www.gnu.org/software/gawk/manual/gawk.html">awk rule</a>, either the pattern or the action can be omitted, but not both. If the pattern is omitted, then the action is performed for every input line. If the action is omitted, the default action is to print all lines that match the pattern.</p> <p>So, <code>awk '/li/ {print}' mailing-list</code> == <code>awk '/li/' mailing-list</code></p> <p>In <code>make</code>, it’s all about files. <code>make</code> only cares about the name of the target. It does not check whether a file of the same name actually gets created by the rule.</p> <p><code>git shortlog</code> command is used to summarize the output of <code>git log</code>.</p> <p><code>git stash branch &lt;new branchname&gt;</code>, creates a new branch, checks out the commit when you stashed your work, reapplies your work there, and then drops the stash if it applies successfully.</p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://bitfieldconsulting.com/posts/need-money">Interesting Consulting Read</a> <a href="https://www.wsj.com/tech/ai/how-chatgpt-brought-down-an-online-education-giant-200b4ff2">RIP Chegg</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>“A man on a thousand mile walk has to forget his goal and say to himself every morning, &lsquo;Today I&rsquo;m going to cover twenty-five miles and then rest up and sleep.” ― Leo Tolstoy, War and Peace</p> /learnedt1w/2024/11_02_2024/ Sat, 02 Nov 2024 00:00:00 +0000 /learnedt1w/2024/11_02_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>arp -a</code> The arp utility displays and modifies the Internet-to-Ethernet address translation tables used by the address resolution protocol. <code>-a</code> displays or deletes all of the current ARP entries.</p> <p>I passed the AWS Certified Cloud Practiioner Exam this week. I studied for a few hours to make sure I was familiar with some of the more niche offerings and all the marketing jargon that will appear on the test. Overall it&rsquo;s really just a lot of content, if you&rsquo;ve used AWS for some time most of it is failry rudimentary.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>arp -a</code> The arp utility displays and modifies the Internet-to-Ethernet address translation tables used by the address resolution protocol. <code>-a</code> displays or deletes all of the current ARP entries.</p> <p>I passed the AWS Certified Cloud Practiioner Exam this week. I studied for a few hours to make sure I was familiar with some of the more niche offerings and all the marketing jargon that will appear on the test. Overall it&rsquo;s really just a lot of content, if you&rsquo;ve used AWS for some time most of it is failry rudimentary.</p> <p>Most useful things to study would be niche offerings (Wavelength, Lex, Rekognition, &hellip;), Networking (VPC, VPN, WAF, Shield, Route 53, Subnets, Regions, AZs, Local Zones, Outposts, Securiy Groups, NACLs, ELB &hellip;), and the shared responsibility model.</p> <h2 id="businessfinance">Business/Finance</h2> <p>RH Election <a href="https://newsroom.aboutrobinhood.com/introducing-the-presidential-election-market/">markets</a>&hellip;</p> <p><a href="https://www.nbcnews.com/health/health-news/long-helene-iv-fluid-shortages-plagued-hospitals-rcna175563">Saline Shortage</a> This industry kind of baffles me so I spent some time reading about it. Basically Baxster ($BAX) produces the majority of Saline for the US. Saline in and of itself is not that complicated but producing it at scale while complying with many regulations seems to be very complicated. It seems as though its VERY low margin for these manufacturers. This stuff also takes up a lot of space&hellip; Low Margin + Product that takes up a lot of space and is heavy is usually a nasty combination especially when it comes to logistics. It also seems that becasue of the margins at play, it only becomes econmically viable to produce at a few specific locations. When those locations get hit with a massive hurrican it just knee-caps production leading to shortages as there is no room for redundancy in the supply chain. Seems like production is fairly inelastic and can&rsquo;t be ramped up or down fast.</p> <p>ALL that being said, it seems like <a href="https://www.hcinnovationgroup.com/policy-value-based-care/blog/13021902/got-your-546-saline-iv-bag-defense-prepared-yet-i-didnt-think-so">hospitals</a> are still charging outlandish amounts for Saline. This is getting into the messy world of health care costs and billing that I have no authority or knowledge to write about, but I thought it was interesting.</p> <p>I can only imagine the complex pipeline all the way from manufacturing to administering this to a human&hellip; and the variety of incentives, regulations, and people inserted into this process along the way.</p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://www.youtube.com/watch?v=bgo7rm5Maqg">Aesthetically pleasing facts live longer</a></p> /learnedt1w/2024/10_26_2024/ Sat, 26 Oct 2024 00:00:00 +0000 /learnedt1w/2024/10_26_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>**.suffix</code> in git ignore, especially helpful if you have a 100mb database locally and a write ahead log.</p> <p><a href="https://www.cs.cmu.edu/~pavlo/blog/2023/04/the-part-of-postgresql-we-hate-the-most.html">Postgres MVCC</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://airandspace.si.edu/stories/editorial/how-do-you-put-apollo-spacesuit">Space Suits</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Building a Neural network in pure SQL is hard!</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>**.suffix</code> in git ignore, especially helpful if you have a 100mb database locally and a write ahead log.</p> <p><a href="https://www.cs.cmu.edu/~pavlo/blog/2023/04/the-part-of-postgresql-we-hate-the-most.html">Postgres MVCC</a></p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://airandspace.si.edu/stories/editorial/how-do-you-put-apollo-spacesuit">Space Suits</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Building a Neural network in pure SQL is hard!</p> /learnedt1w/2024/10_19_2024/ Sat, 19 Oct 2024 00:00:00 +0000 /learnedt1w/2024/10_19_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <blockquote> <p>Shell</p></blockquote> <p>You can us curl to make requests using the DICT protocol <code>curl -s &quot;dict://dict.org/d:windmill&quot; | trim</code></p> <p>Other curl things: <code>-I</code> for HTTP header, <code>-L</code> for redirection</p> <p><a href="https://github.com/jeroenjanssens/dsutils/blob/master/unpack">unpack</a> handy tool for decompression</p> <p>You can use rm and a pattern to remove all files in a directory <code>rm E1F*</code> removes all files that start with E1F</p> <blockquote> <p>Dagster + DBT</p></blockquote> <p>Dagster Assets = DBT Models: dbt models are named using file names, which Dagster will also use to create the corresponding asset’s asset key.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <blockquote> <p>Shell</p></blockquote> <p>You can us curl to make requests using the DICT protocol <code>curl -s &quot;dict://dict.org/d:windmill&quot; | trim</code></p> <p>Other curl things: <code>-I</code> for HTTP header, <code>-L</code> for redirection</p> <p><a href="https://github.com/jeroenjanssens/dsutils/blob/master/unpack">unpack</a> handy tool for decompression</p> <p>You can use rm and a pattern to remove all files in a directory <code>rm E1F*</code> removes all files that start with E1F</p> <blockquote> <p>Dagster + DBT</p></blockquote> <p>Dagster Assets = DBT Models: dbt models are named using file names, which Dagster will also use to create the corresponding asset’s asset key.</p> <blockquote> <p>Python venv [Stashing because for whatever reason I forget the syntax]</p></blockquote> <pre tabindex="0"><code>python -m venv .env source .env/bin/activate </code></pre><blockquote> <p>DuckDB, you can copy a result set directly into a new csv file in your working directory</p></blockquote> <pre tabindex="0"><code>COPY CHECK123 TO &#39;output.csv&#39; (HEADER, DELIMITER &#39;,&#39;); </code></pre><p><a href="https://aws.amazon.com/blogs/big-data/top-10-performance-tuning-tips-for-amazon-athena/">Athena performance tips</a></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.npr.org/2024/10/12/g-s1-28033/7-eleven-store-closures-us-canada">7-11 closures</a> <a href="https://apnews.com/article/jacksonville-jaguars-employee-fraud-176075a2d6cffd292a856e87f7d9d81b">Absoultely insane fraud from a Jags employee</a></p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://mattmazur.com/2015/03/17/a-step-by-step-backpropagation-example/">Back Prop granular example</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://aworkinglibrary.com/writing/accountability-sinks">Accountability sinks</a></p> <p>&ldquo;You can catch more flys with Honey than vinegar&rdquo;</p> <p><a href="https://billwear.github.io/art-of-attention.html">The Art of attention</a></p> <p><a href="https://marginalrevolution.com/marginalrevolution/2022/02/context-is-that-which-is-scarce-2.html">On Context</a></p> /learnedt1w/2024/10_12_2024/ Sat, 12 Oct 2024 00:00:00 +0000 /learnedt1w/2024/10_12_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://duckdb.org/2024/09/25/changing-data-with-confidence-and-acid.html">ACID</a></p> <p><code>GIT_CURL_VERBOSE=1 git pull --rebase</code> interesting verbose info on HTTPS</p> <p>A few more linux commands: <code>seq</code> generates series of numbers <code>rev</code> reverses input, prints to stdout <code>wc</code> outputs count of lines, words, and characters</p> <p>I was attemping to pull changes from a remote repository, running <code>git pull rebase</code> and just randomly got the response:</p> <pre tabindex="0"><code>BUG: remote-curl.c:1528: The entire rpc-&gt;buf should be larger than LARGE_PACKET_MAX error: git-remote-https died of signal 6 fatal: expected flush after ref listing </code></pre><p>I&rsquo;d never gotten this before.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://duckdb.org/2024/09/25/changing-data-with-confidence-and-acid.html">ACID</a></p> <p><code>GIT_CURL_VERBOSE=1 git pull --rebase</code> interesting verbose info on HTTPS</p> <p>A few more linux commands: <code>seq</code> generates series of numbers <code>rev</code> reverses input, prints to stdout <code>wc</code> outputs count of lines, words, and characters</p> <p>I was attemping to pull changes from a remote repository, running <code>git pull rebase</code> and just randomly got the response:</p> <pre tabindex="0"><code>BUG: remote-curl.c:1528: The entire rpc-&gt;buf should be larger than LARGE_PACKET_MAX error: git-remote-https died of signal 6 fatal: expected flush after ref listing </code></pre><p>I&rsquo;d never gotten this before.</p> <ol> <li>I tried increasing http.postBuffer <code>git config --global http.postBuffer 524288000</code>&hellip; nah</li> <li><code>git fsck --full &amp;&amp; git gc</code>&hellip; nah</li> <li><code>brew upgrade git</code> from 2.46.0 -&gt; 2.47.0&hellip; nah</li> <li>Ok&hellip; no more HTTPS lets use SSH instead&hellip; works fine</li> </ol> <p>Not great info online and I&rsquo;m not sure exactly why this randomly occured. Also the data I was fetching and merging was&hellip; tiny:</p> <pre tabindex="0"><code>git pull --rebase remote: Enumerating objects: 14, done. remote: Counting objects: 100% (14/14), done. remote: Compressing objects: 100% (4/4), done. remote: Total 9 (delta 7), reused 7 (delta 5), pack-reused 0 (from 0) Unpacking objects: 100% (9/9), 850 bytes | 44.00 KiB/s, done. </code></pre><p>Reviewed DBT:</p> <ul> <li> <p>Model: Just SQL file, added in models folder</p> </li> <li> <p>Version Control: Connect to GIT or GIT Lab, allows for analytics folks who don&rsquo;t get to easily create branch, merge, push and pull</p> </li> <li> <p>Preview: Run model and return limited result set back to DBT cloud IDE</p> </li> <li> <p>Connection: Underlying DW that DBT uses for compute (Snowflake, Databricks, Redshift)</p> </li> <li> <p>Jinja: Templating engine that allows you to reference other models, define how you want your model to be materialized in your DW [Running Compile in the ide shows the actual SQL]</p> </li> <li> <p>DBT Run: Takes all you models, looks through all the code, wrap it in correct DDL and construct objects in DW in order of the DAG</p> </li> <li> <p>DBT build: just Run + Test for each step in DAG</p> </li> <li> <p>Lineage shows dependencies [Jinja this is the REF function used in the downstream model]</p> </li> <li> <p>Sources [From Fivetran, Stitch, etc&hellip;] -&gt; Staging -&gt; First Layer models -&gt; Fact Models / Dimension models</p> </li> <li> <p>dbt_project.yml: Can tell DBT to build all models under a certain directory as tables instead of doing this with {{config}}</p> </li> <li> <p>Sources: Document raw tables in yaml, then you reference these tables using jinja, so if the names change you only need to update this file not every single model. Can also monitor source freshness <code>dbt source freshness</code></p> </li> <li> <p>Tests: Defined inside yaml that lives with a models directory, supports simple tests against columns out of the box and customer SQL tests by adding models under the tests directory</p> </li> <li> <p>Add descriptions to your yaml as well, this can be and probably is better done via markdown. <code>dbt docs generate</code> spins up a small web page detailing the docs</p> </li> <li> <p>Deploying: Deploy models to production, dedicated branch, schema, and schedule/run dbt commands. To do this create a prod env in the deploy tab</p> </li> </ul> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://htmlforpeople.com/zero-to-internet-your-first-website/">Great tutorial for anyone brand new to building websites</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p><a href="https://profmattstrassler.com/2024/10/01/why-is-the-speed-of-light-so-fast-part-1/">Why is the speed of light so fast</a></p> /learnedt1w/2024/10_05_2024/ Sat, 05 Oct 2024 00:00:00 +0000 /learnedt1w/2024/10_05_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>grep -i</code> for case insensitive search (I always forget this flag for some reason so writing it down)</p> <p><code>cd -</code></p> <p><code>history 5</code></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://reason.com/2024/09/30/held-hostage-overseas-the-irs-wants-your-back-taxes/">Taxes</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://moxie.org/2013/01/07/career-advice.html">https://moxie.org/2013/01/07/career-advice.html</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Looked at Saturn through 16” telescope at Kitt Peak observatory an hour outside of Tucson. Will need to come back and do the climb up to the obervatory on a bike. It sounds like they have some additional cool exhibits opening up that would be fun to check out.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>grep -i</code> for case insensitive search (I always forget this flag for some reason so writing it down)</p> <p><code>cd -</code></p> <p><code>history 5</code></p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://reason.com/2024/09/30/held-hostage-overseas-the-irs-wants-your-back-taxes/">Taxes</a></p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://moxie.org/2013/01/07/career-advice.html">https://moxie.org/2013/01/07/career-advice.html</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Looked at Saturn through 16” telescope at Kitt Peak observatory an hour outside of Tucson. Will need to come back and do the climb up to the obervatory on a bike. It sounds like they have some additional cool exhibits opening up that would be fun to check out.</p> <h2 id="other">Other</h2> <p>A light year is the equivalent of 5.9 trillion miles.</p> <p><a href="https://www.youtube.com/watch?v=MvgN5gCuLac">&ldquo;Their stuff is shit, and your shit is stuff!&rdquo;</a></p> <p><a href="https://www.nps.gov/katm/learn/fat-bear-week-2024.htm?utm_source=chartr&amp;utm_medium=email&amp;utm_campaign=chartr_2024100">Fat bear week</a></p> <p><a href="https://polarisprogram.com/dawn/">https://polarisprogram.com/dawn/</a></p> <p><a href="https://www.youtube.com/watch?v=ig-2xlXfex4">Interview related to the book club book this month.</a></p> <p><a href="https://www.youtube.com/shorts/gkMMLljI2MQ">Insane</a> amount of watts.</p> /learnedt1w/2024/09_28_2024/ Sat, 28 Sep 2024 00:00:00 +0000 /learnedt1w/2024/09_28_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://haystackeditor.com/">Cool visual code editor</a></p> <p>TMUX after creating a new session <code>tmux new -s gvbackfill</code>: Split window vertically CTRL + B, # Split window horizontally CTRL + B, : and then type split-window Switch window CTRL + B and arrow key</p> <p>AWS Athena is based on Trino, I don&rsquo;t know why I never know this, but yeah I guess it is.</p> <p><a href="https://9to5mac.com/2024/09/27/up-to-600-million-facebook-and-instagram-passwords-stored-in-plain-text/">Plain text&hellip;</a> SMH</p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.noahpinion.blog/p/once-again-imports-do-not-subtract?utm_source=post-email-title&amp;publication_id=35345&amp;post_id=149517389&amp;utm_campaign=email-post-title&amp;isFreemail=false&amp;r=6g77v&amp;triedRedirect=true&amp;utm_medium=email">Imports dont subtract from GDP</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://haystackeditor.com/">Cool visual code editor</a></p> <p>TMUX after creating a new session <code>tmux new -s gvbackfill</code>: Split window vertically CTRL + B, # Split window horizontally CTRL + B, : and then type split-window Switch window CTRL + B and arrow key</p> <p>AWS Athena is based on Trino, I don&rsquo;t know why I never know this, but yeah I guess it is.</p> <p><a href="https://9to5mac.com/2024/09/27/up-to-600-million-facebook-and-instagram-passwords-stored-in-plain-text/">Plain text&hellip;</a> SMH</p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://www.noahpinion.blog/p/once-again-imports-do-not-subtract?utm_source=post-email-title&amp;publication_id=35345&amp;post_id=149517389&amp;utm_campaign=email-post-title&amp;isFreemail=false&amp;r=6g77v&amp;triedRedirect=true&amp;utm_medium=email">Imports dont subtract from GDP</a></p> <h2 id="interesting-links">Interesting Links</h2> <p>Thinkig about what I&rsquo;d like to do for <a href="https://new.mta.info/article/mta-open-data-challenge">MTA open data challenge</a> I&rsquo;m thinking something related to buses&hellip; maybe something with the fastest bus?</p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>Megalopolis was one of the worst movies I&rsquo;ve ever watched. I understand its trying to do something, but&hellip; wow!</p> <p>Movies I&rsquo;ve enjoyed recently: The Killing Fields &amp; At Close Range</p> <p>Movies I want: to watch: Dante&rsquo;s Peak and At Rivers Edge</p> <p>I tried making Tomato Jam&hellip; but I kind of just made ketchup. I made some Pumpkin Spice Coffee Cakes with my friend Lauren and they turned out pretty well even though we kind of mixed the flour too soon.</p> <p>I want to try and make Norwegian crisp bread.</p> /learnedt1w/2024/09_21_2024/ Sat, 21 Sep 2024 00:00:00 +0000 /learnedt1w/2024/09_21_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Excel is not a database! (This is not a new learning, but something I&rsquo;d like to shout loudly)</p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.m.wikipedia.org/wiki/Citizenship_in_a_Republic">The Man in the Arena:</a></p> <p>&ldquo;It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.&rdquo;</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p>Excel is not a database! (This is not a new learning, but something I&rsquo;d like to shout loudly)</p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://en.m.wikipedia.org/wiki/Citizenship_in_a_Republic">The Man in the Arena:</a></p> <p>&ldquo;It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat.&rdquo;</p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p>Went on a trip to Denver. The fall colors in Breckenridge, CO are incredibly beatiful, and I&rsquo;d love to spend a full week there next fall/summer. The skiing looks excellent too, but quite expensive.</p> <h2 id="other">Other</h2> <p><a href="https://www.amazon.com/Tuesdays-Morrie-Greatest-Lesson-Anniversary/dp/076790592X">Quite enjoyed Tuesdays wIth Morrie</a></p> /learnedt1w/2024/09_14_2024/ Sat, 14 Sep 2024 00:00:00 +0000 /learnedt1w/2024/09_14_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://en.wikipedia.org/wiki/IEEE_754">IEEE 754</a> on floating point numbers</p> <p>&ldquo;If you want to know what&rsquo;s actually reflected in your data, you may need to profile it. Needles in haystacks aren&rsquo;t revealed by &ldquo;select * from haystack limit 100&rdquo;. You&rsquo;ll probably just get 100 rows of hay.&rdquo;</p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://companiesmarketcap.com/walgreens-boots-alliance/total-debt/">Walgreens Debt Burden</a> apparently a lot of their fundamental real estate is leased.</p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://tookmund.com/2024/09/hibernation-preparation">How does Linux move from an awake machine to a hibernating one?</a></p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><a href="https://en.wikipedia.org/wiki/IEEE_754">IEEE 754</a> on floating point numbers</p> <p>&ldquo;If you want to know what&rsquo;s actually reflected in your data, you may need to profile it. Needles in haystacks aren&rsquo;t revealed by &ldquo;select * from haystack limit 100&rdquo;. You&rsquo;ll probably just get 100 rows of hay.&rdquo;</p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://companiesmarketcap.com/walgreens-boots-alliance/total-debt/">Walgreens Debt Burden</a> apparently a lot of their fundamental real estate is leased.</p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://tookmund.com/2024/09/hibernation-preparation">How does Linux move from an awake machine to a hibernating one?</a></p> <h2 id="mathstats">Math/Stats</h2> <h2 id="travel">Travel</h2> <p><a href="https://kpno.noirlab.edu/">Kitt Peak Observatory</a></p> <h2 id="other">Other</h2> <p>&ldquo;I know that a Tomato is a fruit, and I also know not to put it in a fruit salad&rdquo;</p> <p><a href="https://anandsanwal.me/college-student-debt-deception/">Interesting take on Student Debt</a></p> /learnedt1w/2024/09_07_2024/ Sat, 07 Sep 2024 00:00:00 +0000 /learnedt1w/2024/09_07_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>RAND(1)</code> Does not throw an error in Redshift SQL but <code>RANDOM(1)</code> does. I can&rsquo;t find any info on <a href="https://docs.aws.amazon.com/redshift/latest/dg/r_RANDOM.html">RAND</a></p> <p><code>echo &quot;temp/&quot; &gt;&gt; .gitignore</code> untrack a folder</p> <p><code>git reset HEAD^</code> reset to previous commit</p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://github.com/nuno-faria/tetris-sql">Tetris SQL</a></p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://tomhazledine.com/cosine-similarity/">Cosine Similarity</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>&ldquo;I wish I learned sooner that being the new guy has a lot of perks&rdquo; &ndash; Some guy</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>RAND(1)</code> Does not throw an error in Redshift SQL but <code>RANDOM(1)</code> does. I can&rsquo;t find any info on <a href="https://docs.aws.amazon.com/redshift/latest/dg/r_RANDOM.html">RAND</a></p> <p><code>echo &quot;temp/&quot; &gt;&gt; .gitignore</code> untrack a folder</p> <p><code>git reset HEAD^</code> reset to previous commit</p> <h2 id="businessfinance">Business/Finance</h2> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://github.com/nuno-faria/tetris-sql">Tetris SQL</a></p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://tomhazledine.com/cosine-similarity/">Cosine Similarity</a></p> <h2 id="travel">Travel</h2> <h2 id="other">Other</h2> <p>&ldquo;I wish I learned sooner that being the new guy has a lot of perks&rdquo; &ndash; Some guy</p> /learnedt1w/2024/08_31_2024/ Sat, 31 Aug 2024 00:00:00 +0000 /learnedt1w/2024/08_31_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>echo $?</code> will return the exit status of last command.</p> <p>I was manually creating a test-RDS instance running Postgres in the AWS console&hellip; if you don&rsquo;t find a small area in the additional configuration section where it says &ldquo;Specify a Database Name&rdquo; [This is optional]&hellip; it won&rsquo;t create a database.</p> <p><code>Date +%s</code> on my mac to show time since epoch</p> <p>Been using tmux for long running tasks on my dev desk. I hadn&rsquo;t realized it spawns a new procss <code>ps aux | grep tmux</code>, makes it really useful.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <h2 id="software">Software</h2> <p><code>echo $?</code> will return the exit status of last command.</p> <p>I was manually creating a test-RDS instance running Postgres in the AWS console&hellip; if you don&rsquo;t find a small area in the additional configuration section where it says &ldquo;Specify a Database Name&rdquo; [This is optional]&hellip; it won&rsquo;t create a database.</p> <p><code>Date +%s</code> on my mac to show time since epoch</p> <p>Been using tmux for long running tasks on my dev desk. I hadn&rsquo;t realized it spawns a new procss <code>ps aux | grep tmux</code>, makes it really useful.</p> <p>[Go learning] (<a href="https://go.dev/tour/welcome/1">https://go.dev/tour/welcome/1</a>)</p> <p><a href="https://github.com/okigan/awscurl">awscurl</a> is pretty nifty, used it for the first time.</p> <p><code>git restore --staged directory/</code> to unstage all files from a commit in a specific directory</p> <h2 id="businessfinance">Business/Finance</h2> <p>REI <a href="https://www.seattletimes.com/business/rei-reports-another-year-of-losses-pledges-efficiency-and-new-stores/">lost</a> ~300MM dollars last year.</p> <h2 id="interesting-links">Interesting Links</h2> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://en.wikipedia.org/wiki/Lady_tasting_tea">The Tea Experiment</a></p> <h2 id="travel">Travel</h2> <p>Anello - Tucson (Excellent pizza and chocolate tart)</p> <p>Other places I want to try: Cherry Blossom and El Torero</p> <h2 id="other">Other</h2> <p>Had a friend who now lives in Spain stay with us in Tucson, which was quite nice. I was reminded of how great Mt.Lemon is even when most think its too hot to go outside in Tucson.</p> <p>Sat in on a med school class and listened to a friend&rsquo;s mom, Dr. for 30 years, give a pep talk to a bunch of first year med students.</p> <p>Been calling old friends and talking on the phone. They are typically good conversations, most of them over-due, and always welcome. Not sure why I haven&rsquo;t done this&hellip; maybe its just out of mind as you never see this people in person.</p> <p>Gave a kirkland sports drink to a security guard, they actually make a decent sports drink&hellip; I would drink it over gatorade.</p> /learnedt1w/2024/08_24_2024/ Sat, 24 Aug 2024 00:00:00 +0000 /learnedt1w/2024/08_24_2024/ <h1 id="what-i-learned-this-week">What I learned this week</h1> <p>I&rsquo;ve decided to build a habit around recording interesting things I learn/refresh my memory on each week.</p> <p>I believe this will be a collection of random facts, statements, and quotes. I&rsquo;ll attempt to organize them into broad categories, and add categories as the week goes on. I have no idea what does/does not make the cut of being included it will mostly be random, at least for now.</p> <h1 id="what-i-learned-this-week">What I learned this week</h1> <p>I&rsquo;ve decided to build a habit around recording interesting things I learn/refresh my memory on each week.</p> <p>I believe this will be a collection of random facts, statements, and quotes. I&rsquo;ll attempt to organize them into broad categories, and add categories as the week goes on. I have no idea what does/does not make the cut of being included it will mostly be random, at least for now.</p> <p>Initial strategy is to make a note of concepts as they come up and spend fewer then 60 minutes at the end of the week.</p> <p>I short reminder to myself: You do not care how this looks, this does not have to be comprehensive, and there should zero mental burden on what is added to this list.</p> <blockquote> <p>“And now that you don&rsquo;t have to be perfect, you can be good.” ― John Steinbeck, East of Eden</p></blockquote> <h2 id="software">Software</h2> <p><a href="https://smithy.io/2.0/index.html">Smithy</a> is a language for defining services and SDKs. Basically set of tools for defining clients and/or servers for a particular service.</p> <p><code>curl --verbose --silent google.com</code> Use curl to inspect HTTP exchange</p> <p><a href="https://site.mockito.org/">Mockito</a> is a popular Java mocking framework that is widely used in unit testing. The primary purpose of Mockito is to simplify the process of creating and managing mock objects, which are simulated objects that mimic the behavior of real objects in a controlled way.</p> <p>If you&rsquo;re cloning a git repo that uses submodules you&rsquo;ll need to: <code>git submodule init</code> &amp; <code>git submodule update</code> &hellip; spent a bit longer than I&rsquo;d like to admit figuring that out.</p> <p><a href="https://www.cloudflare.com/learning/security/glossary/what-is-bgp/">Border Gateway Protocol</a></p> <p><a href="https://research.google/pubs/sql-has-problems-we-can-fix-them-pipe-syntax-in-sql/">Pipe Syntax in SQL</a> Google introduces an extension of SQL using pipes</p> <h2 id="businessfinance">Business/Finance</h2> <p><a href="https://commoncog.com/cash-flow-games/">Games people play with Cashflows</a> - Interesting article on forming opinions, cash flows, and borrowing.</p> <h2 id="interesting-links">Interesting Links</h2> <p><a href="https://zarar.dev/anatomy-of-a-mental-breakdown/">Anatomy of a 2AM mental breakdown</a> - Well written piece and good discussion on <a href="https://news.ycombinator.com/item?id=41300368">HN</a></p> <p><a href="https://writings.stephenwolfram.com/2024/08/whats-really-going-on-in-machine-learning-some-minimal-models/">What’s Really Going On in Machine Learning? Some Minimal Models</a> - Amazing visuals still reading through</p> <h2 id="mathstats">Math/Stats</h2> <p><a href="https://en.wikipedia.org/wiki/Multi-armed_bandit">Multi Arm Bandit</a> - Explore vs Exploit and minimize regret.</p> <p><a href="https://blog.moertel.com/posts/2024-08-23-sampling-with-sql.html">Sampling with SQL</a></p> <p>Variance for a binomial distribution can be calculated as n * p(1-p), thus the variance of a coin flip over five trials is <code>5 * 0.5 (1 - 0.5) = 1.25</code> the <code>SQRT of 1.25 = 1.118</code>. We know the mean of 5 trials is<code> 0.5 * 5 = 2.5</code>. With this information we can use a normal distribution to approximate a binomial distribution to get the probability of something occurring&hellip; say &lt;=4 out of 5 flips being heads. We get a z-score of <code>(4 - 2.5) / 1.118 = 1.34</code>, and looking up 1.34 in a z table we see the area to the left of 1.34 constitutes ~91% a.k.a there&rsquo;s approximately a <code>91% chance that &lt;=4 out of 5 flips are heads</code>.</p> <p>As noted above we can use a normal distribution to APPROXIMATE a binomial distribution, at lower numbers of trials (like we have here), this approximation rears its head. A simple way to solve this problem would be to find the inverse of the probability that all 5 trials would be heads as that is the only scenario not accounted by &lt;= 4 heads. Thus, <code>1 - (0.5*0.5*0.5*0.5*0.5) = .9686</code> which is the true probability of &lt;=4 out of 5 flips are heads.</p> <p>The difference, ~91% vs ~97%, occurs as we are using a continuous probability distribution to approximate a discrete probability distribution. <a href="https://library.virginia.edu/data/articles/continuity-corrections-imperfect-responses-to-slight-problems">Continuity Corrections</a> can be employed to reduce this.</p> <p>We can also calculate the Binomial probability: P(X=x), say of exactly 4 out of 5 flips being heads. <code>P{x} = {n \choose x} * p^{x} * q^{n-x}</code>. Under the hood {n \choose x} is really just the number of combinations <code>n! / (n-x)!*x!</code>. In our case this becomes 5! / (5-4)!*4! = 120/24 = 5 and then our second piece is just <code>.5^4 *.5^1 = .03125</code> thus we get <code>5 * .03125 = .15625</code> the chance of getting exactly 4 heads out of 5 flips.</p> <h2 id="travel">Travel</h2> <p>Encinitas, CA is very nice. The Comedy Store in LA is great, saw Andrew Santino, Bill Burr, Craig Robinson, David Spade, and Ron White. Be careful riding bikes on the PCH on Sat/Sun during the summer&hellip; maybe choose a different route/time.</p> <h2 id="other">Other</h2> <p>Generally, it is required that police officers have a GED.</p>