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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
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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
Statistician and Chief Scientist at Posit (RStudio). Author of the ggplot2, dplyr and tidyverse R packages and of books on R programming and data science.
9 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.
On this busy day, I'm also jumping through a few hoops to fix a deadname for a Kickstarter backer. Reminder to future self: nothing about a person is immutable nor something that I get to decide. Related
2 September
Product designer and entrepreneur; author of Mobile First and Web Form Design; formerly a product director at Google; now building AI products.
loads of AI use today is building more of the tools we’re used to (apps) instead of skipping the tools and jumping straight to the outcomes the apps enable. Quoting @LukeW new article on how that lets us interact with outcomes and lets agents deal with using the tools: Related
26 August
Irish independent game developer, maker of VVVVVV, Super Hexagon and Dicey Dungeons.
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
30 July
American software engineer; worked on code-server at Coder and teaches TypeScript and open-source contribution. Publishes at joeprevite.com.
as software engineers most of us are sitting in an office chair all day we spend hours staring at a screen, not moving more then our fingers or wrists sometimes we lock in and it feels like there are only occasional windows to move if so, start simple. take a screen break and do: - a 5-min walk around your house - 25 push-ups - 25 jumping jacks anything to break the chain of not moving trust me, you'll thank me in a year Related
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
1 July
Programmer; wrote Extreme Programming Explained and Test-Driven Development, signed the Agile Manifesto, and writes Tidy First?.
Their words
Always try your stupid ideas if you can do it cheaply and reversibly. Jumping off a bridge is not a reversible decision. Not talking about that. I'm talking about stuff like this where you're just like, "Here's a stupid idea." 99 times out of a 100 it'll fail. But that one time you won't have any competition cuz nobody else is stupid enough to try this idea.
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youtube.com
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
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
16 April
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 Covering 10 points, a surprisingly tricky puzzle. 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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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
4 March
Creator of Claude Code at Anthropic.
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
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
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.
27 April 2023
Pen name of the Canadian-American writer behind mrmoneymustache.com, a blog on frugality, early retirement and index-fund investing that has run since 2011.
Frugal Man Buys $52,000 Car – Why?? As I type this, I’m jumping through the various hoops involved in buying a 2023 Tesla Model Y, a rather expensive, luxury “crossover” that is absolutely loaded to the gills with excess: all wheel drive, faster accelerat…
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18 September 2020
Co-founded Neuralink and founded Science Corp, which is building a retinal implant; writes about neural interfaces and biology.
4 January 2017
Game developer and moral philosopher; made QWOP, GIRP and Getting Over It, and teaches at the NYU Game Center.
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.
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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.
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