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20 September
Mac and iOS developer at the Iconfactory, where he has worked on apps including Twitterrific and Tot. He writes about development at furbo.org.
Centering elements on the Duo is tricky. Looking at the image on the left, I was convinced that things weren’t aligned vertically. But after I added xScope’s guides (on the right), everything is correct. The control margin on the right tricks the eye and I don’t know if I can, or should, do anything about that. You’ll probably want this in your Duo toolbox: xscopeapp.com
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18 September
President of the United States, the 45th from 2017 to 2021 and, as of 2026, the 47th; before politics a New York property developer who ran the Trump Organization, and the host of The Apprentice from 2004 to 2015.
I am proud to announce that, effective immediately, I am banning Fake News CNN, MSNOW (who recently changed their name from MSNBC due to lack of viewership and credibility!), and Politico (The recipients of an illegal and ridiculous $8 Million Dollar subscription, an All Time Record, directly from the United States Government, under Crooked Joe Biden, in order to keep them “alive.” Seems like corruption to me!), from the White House as a result of their constant “reporting” FAKE NEWS! Media Outlets shouldn’t be able to constantly write or report FICTION and LIES when they’re covering the Pres… America government Related
Developer, author and YouTuber covering Raspberry Pi, homelab hardware and Ansible automation. Author of Ansible for DevOps.
I thought I had the best time at the largest vintage computing event in the world. But then someone rolled up with a cesium atomic clock, and I was no longer sure... My video covering VCF Midwest is here: https://t.co/eebZXkO5oc #vcfmw Related
Working on @ampcode. Writing registerspill.thorstenball.com. Once authored interpreterbook.com and compilerbook.com.
Delicious meta thought from this morning: The table pounding from the AI-skeptical software engineers, shouting "they can't build proper, scalable, performant programs!", sounds especially thin when you consider that right now nearly everyone is looking for where this is going and no one knows yet. Building something "proper" and "scalable" and "performant" before you have PMF is a tricky thing to pull off (there's exceptions, of course, where PMF comes from being one of the three) and now it seems like most companies are looking for PMF every 3 months. Related
Founder of the Free Software Movement and the GNU Project, original author of GNU Emacs and the GNU General Public License, and long-time president of the Free Software Foundation.
https://stallman.org/glossary.html#bully https://civicshout.com/p/media-must-cover-trump-s-welker-attack-as-authoritarianism-2 US citizens: call on the media to stop covering the bully's attacks on journalists as outbursts and start covering them as deliberate, escalating attempts to use government power to silence the press. government Related
17 September
Writes The Pragmatic Engineer, the software-engineering newsletter, and wrote The Software Engineer's Guidebook. Formerly an engineering manager at Uber, and at Microsoft/Skype and Skyscanner before that.
The puzzle of why the @turbopuffer X account follows these 5 people, and no one else, is either a deliberately hard puzzle or an insider joke. If anyone cracked it, let me know: Related
15 September
Interactive fiction author and hacker; wrote Spider and Web and Hadean Lands, and designed the Glulx virtual machine.
Bluesky Some recent mystery and puzzle games. (Okay, _This Bed We Made_ is from a couple years back.) - The Mermaid Mask - This Bed We Made - Cognition Method - He Who Watches blog.zarfhome.com
Related
Mastodon Some recent mystery and puzzle games. (Okay, _This Bed We Made_ is from a couple years back.) ⁃ The Mermaid Mask ⁃ This Bed We Made ⁃ Cognition Method ⁃ He Who Watches https://blog.zarfhome.com/2026/09/late-summer-mysteries #Reviews Related
14 September
Systems and developer-tools engineer at Cloudflare as of 2026, on durable infrastructure for AI agents; worked on React and PartyKit before that. Writes at sunilpai.dev.
Their words
foundation is ostensibly a sci-fi series about empires, psychohistory, and hard technology, but really it's about individuals with extreme agency and puzzle-solving ability having wildly outsized impact on a universe that would otherwise just sit there waiting to decay
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@threepointone on X x.com
13 September
Software engineer who writes the blog Made of Bugs about performance, debugging and understanding computer systems. Previously worked at Anthropic on interpretability, at Stripe on Sorbet, and at Ksplice.
12 September
Investor and writer. Previously a partner at Andreessen Horowitz and a product leader at Twitter, Facebook, Snap and Microsoft. Writes essays and memos at sriramk.com.
I find myself disagreeing with Terence Tao (a very scary phrase to say!) and think the core question posed is whether the "misalignment" is between the mathematical community and humanity. In other words - are the Millenium Prize problems meant to incentivize advancements for humanity or foster the field of mathematics and mathematicians? As a counter example, if there was a prize for creating a drug that cured a rare strain of cancer, we would not care if it was AI that did it. We would be happy it has been solved. On the other hand, if long running agents figured out the puzzle in "Kryptos"… AI alignment Related
10 September
Programmer; makes Handmade Hero and teaches Performance-Aware Programming, and argues loudly about how software got slow.
4 September
Author of Shape Up; formerly head of strategy at Basecamp, where he worked on product design for seventeen years; now runs Felt Presence.
A friend turned me on to asking Fable to wireframe different options when I have a tricky UI problem with a lot of requirements and too many possible paths. Game changing. Gives me flashbacks to what @bmoesta taught me about using orthogonal arrays when an engineering problem has too many variables. It's not about one-shotting the answer. It's about getting enough contrast between options to clarify which variables (aka "factors") are most important. Not which solution is best -- which variables matter more. THEN I can use that knowledge to decide to fix certain variables and narrow the space… Related
24 August
Security researcher; built Report URI and Security Headers, and writes about web security in practice.
21 August
Writer and developer. He runs the Latent Space newsletter and podcast about AI engineering, and writes essays on software and careers at swyx.io.
it was a blast covering Build Fest this year - they didnt know this but I learned to code with MongoDB over 10 years ago (shoutout MERN stack) and now in the AI Engineering era seeing SF builders rediscover MDB was so gratifying - this was a *huge* step up from last year! Quoting @MongoDB ICYMI: Everything announced at #MongoDBlocal Build Fest is designed to help developers stay in flow and ship production AI, faster. From the new Atlas Managed MCP Server for Agents and native Atlas access inside @claudeai, Claude Code, @ChatGPT, Codex, @grok Build, @DevinAI, & @cursor_ai, to Automa… Related
20 August
Writer and developer. He runs the Latent Space newsletter and podcast about AI engineering, and writes essays on software and careers at swyx.io.
HAHAHAHAHAHA non technical people are so incredibly cooked they are burnt thru can u imagine covering ai with zero context, zero reasoning, zero internal world model. it must be so delightfully joyful, everything is so amazing, face value is all you need, what a time to be alive Quoting @OpenAIDevs With Codex, @asana finished a frontend test migration from Enzyme to React Testing Library in two calendar weeks—a project expected to take five more years. Related
19 August
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
New puzzle, as part of the series of monthly puzzlers with @MoMath1. As a variant: What if you start with pegs in all four corners of the square, and you want them to end up on corners of a bigger square? Related
18 August
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
Short The jumping pegs puzzle Related
Deep-learning researcher and Turing Award laureate; founder of the Mila institute.
x.com I had a great time discussing with @SciencePetr about the growing risks of AI and how these often stem from current AI training techniques. Thanks for coming to visit @LawZero_ and for covering these important topics! youtu.be
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Bluesky I had a great time discussing with Petr Lebedev about the growing risks of AI and how these often stem from current AI training techniques. Thanks for coming to visit @law-zero.bsky.social and for covering these important topics! youtube.com
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17 August
Machine-learning researcher on open language models; writes the Interconnects newsletter and the RLHF Book, after leading post-training at Ai2.
30 July
Polyglot; founded Fluent in 3 Months and argues for speaking from day one rather than waiting until you are ready.
24 July
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
Short The 64 sugar cubes puzzle Related
9 July
Statistician at Carnegie Mellon; writes on complex systems, machine learning and inference, and has kept a books-read notebook since 2000 that is now thousands of entries long.
Their words
The chapter on medieval Islam wasn't very deep, otherwise this is truly excellent, particularly when covering the very complicated 20th century. I don't have much more to say, because it is so good, except that I should try to get my brother to review it.
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bactra.org
21 June
Lawyer and everyday-carry gear reviewer who publishes scored knife, flashlight and multitool reviews at Everyday Commentary.
Knives and Kids So I thought now that I do a little politics on the site by covering government issues that impact knives, I would wade into another controversial topic—parenting. I have two boys, one is 15 and the other is 10. Both ha…
government Related
10 June
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
Bluesky Suppose you wanted to reinvent the idea of Shannon Entropy for yourself. This puzzle is a good place to start (Full video on YouTube). Related
x.com Suppose you wanted to reinvent the idea of Shannon Entropy for yourself. This puzzle is a good place to start (Full video on YouTube). Related
26 May
Lawyer and everyday-carry gear reviewer who publishes scored knife, flashlight and multitool reviews at Everyday Commentary.
20 May
Rust engineer at Google working on Android; maintains Tokio and works on Rust in the Linux kernel.
10 May
Author of The Lean Startup and Incorruptible, and founder of the Long-Term Stock Exchange, who advises companies on corporate governance and mission protection.
Their words
The more ants you put in the puzzle, the faster the solution. But the more humans you add, the worse. Unless the humans are very carefully aligned, this is the key lesson for organizational design.
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youtube.com
26 April
Co-founder and CEO of Snap Inc., the company behind Snapchat, which he started in 2011 while studying product design at Stanford.
Their words
network effects are certainly an important piece of the puzzle for sure, um but I don't think they're enough when it comes to these sorts of software uh you know, software cloning.
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youtube.com
2 April
Emeritus Professor of Statistics at the University of Cambridge, former president of the Royal Statistical Society, and author of The Art of Statistics.
Spring is here, so it's back to frittering away my remaining life by doing wooden jigsaws face downwards. This one was tricky, even with the grain to follow, as there were so few interlocking pieces Related
25 March
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
American open-source program lead working on WordPress; a WordPress core contributor and release lead who writes at jeffpaul.com.
LEGO Minifigure – 1000 Piece Puzzle Another puzzle down, and this LEGO minifigure one kept pulling us back to the table. Tricky in places, fun in others, and somehow the perfect excuse for the kids to stall homework just a little longer. jeffpaul.com
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22 March
Co-founder of Foundry Group and of Techstars. Has blogged at Feld Thoughts since 2004 and has written or co-written nine non-fiction books on startups and venture capital.
Their words
The book isn’t about covering miles or conquering peaks. It’s about what happens when you pay attention on a trail.
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feld.com
21 March
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
Short Bacteria Grid Puzzle Solution Related
13 March
Founder and chief analyst of SemiAnalysis; reports on semiconductor supply chains, AI datacentre economics and what the chip export controls actually do.
data centers
Their words
Then all of a sudden, you've unlocked 20% of the US grid for data centers because most of the times that capacity is sitting idle and it's really only there for that peak, right? Which is a day or two, right?
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youtube.com
22 February
Independent AI policy researcher; led policy research at OpenAI from 2018 to 2024, latterly as senior adviser for AGI readiness.
20 January
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
7 November 2025
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
I had fun joining @peterrowlett.net and @steckl.es recently on their mathematical objects podcast, talking about my wood puzzle collection. Most of the time was spent struggling desperately to describe a highly visual topic in an audio-only context. open.spotify.com
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31 October 2025
Co-founder of Rockstar Games, lead writer of the Grand Theft Auto and Red Dead Redemption series, and founder of Absurd Ventures since leaving in 2020.
Their words
And when you link two together with the cable and if I got four, it would push yours forward. It was like the perfect game design. So from a pure puzzle perspective, nothing comes close.
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youtube.com
17 October 2025
Founding member of OpenAI and former director of AI at Tesla; creator of nanoGPT and the term "vibe coding".
LLMs
Their words
the reason that I think this is kind of tricky is quite subtle. And it's the fact that anytime you use an LLM to assign a reward, those LLMs are giant things with billions of parameters and they're gameable.
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youtube.com
12 September 2025
Professor at Berkeley working on robot learning; co-founded Physical Intelligence, and argues that robots will learn from data rather than be programmed.
Their words
Uh but it uh I think we kind of like know like roughly the puzzle pieces and it's something that we need to work on and I think if we work on it and we're a bit lucky and everything kind of goes as planned I think single digit is reasonable.
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youtube.com
28 August 2025
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
Bluesky Guest video 3/5 while I'm on leave is now up! It's by a former SoME winner, covering key ideas in statistical mechanics to create a simple and discrete model mirroring the behavior of a fluid transitioning between a liquid and gaseous state. Enjoy! youtu.be
Related
x.com Guest video 3/5 while I'm on leave is now up! It's by a former SoME winner, covering key ideas in statistical mechanics to create a simple and discrete model mirroring the behavior of a fluid transitioning between a liquid and gaseous state. Enjoy! youtu.be
Related
23 August 2025
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
Bluesky Hey, psst, you can find early views for two upcoming guest videos on Patreon, one about statistical mechanics and another covering a story of modern art and group theory. Notes on early releases are always helpful before finalizing a video. patreon.com
Related
x.com Hey, psst, you can find early views for two upcoming guest videos on Patreon, one about statistical mechanics and another covering a story of modern art and group theory. Notes on early releases are always helpful before finalizing a video. patreon.com
Related
15 August 2025
Founder of Terraform Industries and formerly a physicist at NASA's Jet Propulsion Laboratory; writes about energy, space and manufacturing.
solar
Their words
And the impact of solar array on desert is arguably positive because it shades the ground and improves like soil moisture retention. Um there like if you wanted to reverse desertification, you would basically just deploy solar panels on it and that would pay for the process.
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youtube.com
18 June 2025
Independent AI policy researcher; led policy research at OpenAI from 2018 to 2024, latterly as senior adviser for AGI readiness.
26 May 2025
Mathematician at UCLA, working mainly in harmonic analysis and partial differential equations. Writes What's new, a long-running blog on their research, open problems and expository notes.
A video on an actual formalization task from my Polynomial Freiman Ruzsa (PFR) project, which is sufficiently tricky (and sufficiently far from existing training data of current models) that one still has to largely formalize these proofs by "hand": youtube.com
Related
29 March 2025
Programmer and teacher; writes on software, learning and the web, and makes the Coding Blocks video course.
12 March 2025
Writer and consultant on formal methods and software correctness; author of Practical TLA+ and Logic for Programmers.
16 December 2024
Writes The Pragmatic Engineer, the software-engineering newsletter, and wrote The Software Engineer's Guidebook. Formerly an engineering manager at Uber, and at Microsoft/Skype and Skyscanner before that.
16 August 2024
Computer performance engineer working on datacenter performance at OpenAI, previously Netflix and Sun/Joyent. Author of Systems Performance and BPF Performance Tools, and creator of flame graphs.
10 November 2023
Founder of Terraform Industries and formerly a physicist at NASA's Jet Propulsion Laboratory; writes about energy, space and manufacturing.
14 July 2023
Author of Shape Up; formerly head of strategy at Basecamp, where he worked on product design for seventeen years; now runs Felt Presence.
30 May 2023
Programmer and entrepreneur; co-founded GitHub and created Jekyll, Gravatar and the Semantic Versioning spec.
Their words
While we love GraphQL for many use cases, implementing a secure and performant GraphQL API can be tricky and there is a definite cost to requiring it during early prototyping of your app.
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tom.preston-werner.com
29 July 2022
Co-founder and partner at Union Square Ventures in New York. Has written the AVC blog almost every day since 2003, on venture capital, startups, music and crypto.
@whitneymcn @aweissman happy cover friday. here is Valerie June covering Gillian Welch soundcloud.com
Related
22 July 2022
Co-founder and partner at Union Square Ventures in New York. Has written the AVC blog almost every day since 2003, on venture capital, startups, music and crypto.
19 April 2022
Swedish software developer writing about tooling, working from home and running a software business at seastone.io.
I’ve found that whenever I’m bumping heads with a tricky problem, doing something else completely different, is usually what lets me solve it. Sometimes you need “crunch time” but often it’s more productive to take some off time instead. Have you noticed anything similar? Related
28 October 2020
Founder and CEO of Get Lighthouse, a management-coaching software company, and previously a product lead at KISSmetrics. Writes about leadership, management and product at jasonevanish.com.
Their words
If you have no idea what it takes to start a company, this is a great book to start with. Guy does an excellent job of covering all the basics quickly and efficiently.
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jasonevanish.com
18 September 2020
Co-founded Neuralink and founded Science Corp, which is building a retinal implant; writes about neural interfaces and biology.
1 June 2020
Mathematician and maker of the 3Blue1Brown YouTube channel, which explains mathematics through animation. Creator of the open-source Manim animation library and founder of the Summer of Math Exposition.
Their words
As the title suggests, this offers a highly pictorial introduction to complex analysis. I would not use this as the only text to learn about complex analysis, but Needham does a marvelous job of conveying the beauty of the subject, with numerous helpful intuitions for otherwise famously tricky ideas.
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3blue1brown.com
10 December 2019
Co-founder of Microsoft and of the Gates Foundation. Writes Gates Notes on global health, energy and climate, and on whatever they have been reading.
Their words
But with the exception of a brief section covering the past 20 years (more on this below), I loved the book and hope lots of people read it.
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gatesnotes.com
29 November 2017
Cook and food writer specialising in Chinese cuisine; the first Westerner to train at the Sichuan Institute of Higher Cuisine, and author of Shark's Fin and Sichuan Pepper and Invitation to a Banquet.
Their words
It offers a good counterpart to the KC Chang. It's very well researched and comprehensive, covering all aspects of Chinese cooking – ingredients, cooking techniques, history, agricultural system and so on.
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fivebooks.com
4 January 2017
Game developer and moral philosopher; made QWOP, GIRP and Getting Over It, and teaches at the NYU Game Center.
27 May 2013
Author of Fluent Forever and founder of the app of the same name; teaches pronunciation first and vocabulary through images rather than translation.
Nothing matches. Show everything
A korrent is a belief a person has stated in their own words: one
sentence stating the claim, backed by a quote and a source, kept at
korrents.com .
Under a name here, the quoted block is what they actually said.
The korrent beneath it is the claim those words support, in
korrents' wording — tap it to see the record, its source, and who
else holds it.
Nobody here wrote their own korrents. They are compiled from public
statements, and a person can change their mind, which is recorded too.
Got it
About the English under a post
Some people here publish in a language other than English. Where they
do, this site shows a machine translation beneath the post, in
this typeface — the site's own, not theirs.
The post itself is never changed, moved or hidden: what is set in the
serif above is exactly what the person published, and it is what to
quote them on. A translation can be wrong in ways that matter,
especially about tone.
Only the post's own words are translated. A quoted post, a linked
article and a belief on korrents.com
are left in their original language.
Got it