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19 September
Software engineer and educator; creator of Testing Library and of the EpicWeb.dev and EpicReact.dev courses.
You can now easily use Jev in @kodykoala: https://t.co/9wowF8KzV9 You can use this when you need typed decisions fast: - An inbox floods in and you need to know which messages are actionable, which can wait, and which are noise. - A support thread arrives and you want the right team, an urgency score, and whether to escalate in one pass. - You're checking a refund against order and policy text and need a clear yes/no with confidence. - Chat or tickets mix bugs, feature asks, and banter; you want a label and whether there’s enough detail to file an issue. - Alerts keep firing and you need “rea… Related
18 September
Software engineer and educator; creator of Testing Library and of the EpicWeb.dev and EpicReact.dev courses.
Their words
A new feature is a new product. @erinfoox writes the list and asks why before she builds.
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@kentcdodds on X x.com
17 September
Co-founder and CTO of Honeycomb; previously an infrastructure engineer at Parse, Facebook and Linden Lab, and co-author of Observability Engineering.
This guy runs a podcast. It's his six year anniversary. So he asks ChatGPT who he should have on and why, and then he does a thread tagging people like me @kentbeck, @lethain, etc with the reasons. This is a great example of something I just wrote about: charity.wtf
Quoting @onejasonknight @mipsytipsy - you should come on One Knight in Product to talk about AI mandates, engineering productivity, management and what happens when coding gets cheap. It'd work because you have strong opinions and seem entirely comfortable having someone poke at them. OpenAI Related
16 September
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.
Indian software developer and prolific blogger on PHP, Laravel and JavaScript; open-source enthusiast publishing near-daily at amitmerchant.com.
Handy little Mac app I came across lately to see (and kill) all the dev servers running on localhost from your menu bar! → Related
15 September
Australian moral philosopher, Professor of Bioethics emeritus at Princeton University; author of Animal Liberation, Practical Ethics and The Life You Can Save.
In this excerpt from my conversation with Jack Symes, we discuss chickens, factory farming, and what our appetite for cheap meat asks us to ignore. Watch the full conversation, “Is Eating Animals (Always) Wrong?”, on YouTube. Videos: @weanimals.bsky.social Related
14 September
Creator of the Keras deep-learning library and the ARC-AGI benchmark.
> One could even define intelligence as the efficiency with which one converts experience into competence; by this definition they lag very far behind us Yes, one could define intelligence in this way, and one would be right. By this metric current AI is approximately 6 OOMs less intelligent than humans. Your ancestors' evolutionary history did not prepare you for Python programming, yet you can learn to competently program in Python in a few hundreds of hours. An LRM needs the training data equivalent of ~1B hours (on top of all of its non-programming related training data). Another dimensio… Quoting @DKokotajlo Dan Selsam is a current OpenAI capabilities researcher. (since 2022) He was my boss for a while. He doesn't have a twitter account but has made this public statement of his views on AI risk and sent it to me to share: Dan Selsam's Personal Statement on AI Risk: I have been working on AI for over fi… Related
Former L8 engineer at Meta, Microsoft and Atlassian, now writing and building solo on agentic engineering. Writes Kun's Field Notes and posts a lot about AI coding agents on X.
oooh this looks nice - a handy little skill to generate animated presentational videos Quoting @CalvinGrunewald Sharing a fun new skill/tool I built that helps me make videos for a variety of purposes. You have your coding agent install the skill, and then it writes react code to generate the video. It supports music composition as well as narration. I use it for making videos about products or tools we buil… Related
12 September
Economics professor at the University of California, Berkeley and a former Deputy Assistant Secretary of the US Treasury. Author of Slouching Towards Utopia and writer of the Grasping Reality newsletter.
Why, in his 1513 “Letter to Francesco Vettori”, does Niccolò Machiavelli so dramatize the simple act of opening a book? Why the stripping off muddy clothes, the donning court robes, the crossing a threshold into “the ancient courts of ancient men” where he asks questions of Livy and Cicero and they answer him? Because for Niccolò the thing was new. He had spent fourteen years running his intelligence on live human contact: Borgia’s menace, a king’s facial expression, a council’s mood... 1/ Related
11 September
Co-founder and CEO of Shopify; long-time Linux user and Omarchy contributor.
Yep. Except: 1. This was about important internal tools. The team was stuck in some architecture nightmare of their own doing (writing it in rails but headless, with graphql api, and a SPA react app, constantly needing frontend engineers for changes). I call this kind of thing 'cosplaying an enterprise production app'. All that complexity was in the way and using straight rails was perfect in that case. 2. I make calls like this all the time. Usually someone on the team asks me to. They see what needs to happen but don’t want to be the bad guy. I’m happy to just make the call if I agree with… Quoting @ErfanEbrahimnia just leaving this here JavaScript Related
7 September
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.
Chapter 29.1: Recent Calls A man from Ardmore Risk Advisory asks Nadia who she called Tuesday, but nothing about physics. Seth scrolls his own recent calls and counts four. She tells Seth she is done. "They're your friends and I hope they're alive." zeroknowledge.ink
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6 September
AI research engineer working on large language models. He writes the Ahead of AI newsletter and is the author of Build a Large Language Model (From Scratch).
Reasoning from scratch round 2: In this video, I cover the text generation process in LLMs and KV caching (to prepare the base model before adding reasoning techniques in the upcoming ones). 00:00 Introduction and reasoning model demo 01:55 How to work through the book 05:00 Chapter 2 overview 08:25 Checking PyTorch and hardware support 10:26 Apple silicon and MPS caveats 15:00 Cloud GPU options 16:08 Tokens and tokenization 18:20 Qwen3 and the Reasoning From Scratch package 23:05 Encoding and decoding text 26:24 Downloading weights and selecting a device 31:01 Loading the pretrained Qwen3 mo… LLMs Related
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.
Chapter 27.1: Standards Nadia runs a physics lab at CU Boulder. A stranger waits in her hallway. He asks her four questions, but he already has the answers to three. "You've taken four minutes, just like the guy on the phone the other day." zeroknowledge.ink
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4 September
Author and journalist writing on food, plants and consciousness. Professor at UC Berkeley and co-founder of its Center for the Science of Psychedelics.
3 September
Co-founder of Y Combinator and Viaweb; essayist at paulgraham.com.
startups
Their words
Everyone always asks me like with all this AI is anything still the same? And the answer is so far almost everything is exactly the same. The only weird The only weird new thing is that companies have these giant AI bills.
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youtube.com
2 September
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.
It's funny to me watching renters have a realtor contact to rent and then the realtor asks for a finders fee from the landlord. That could be fine, except every case of this they've been more of a pain to deal with than people who are capable of using listing sites themselves and thus have no fee for showing up. Related
Programmer, teacher and speaker; long-time Microsoft developer-community figure, host of the Hanselminutes podcast and author of the hanselman.com blog.
I use dictation tools like "Handy" that use local models to turn speech to text. I've got a fork/PR that adds screen annotation so you can say things like "help me understand 'this' or move 'this' to the left" and it'll put both text+annotation into agents wth a single key. Related
24 August
Ruby and Rails core committer known online as "tenderlove"; maintains Nokogiri and works on Ruby performance.
Gotta go to Toronto in a couple months so I'm watching Nirvana the band the show to prepare Related
15 August
Professor of strategic studies at St Andrews; wrote How the War Was Won and The Strategists, and writes weekly on the war in Ukraine.
14 August
Developer and podcaster; created Instapaper and Overcast, co-founded Tumblr, and co-hosts the Accidental Tech Podcast.
RE: https://mastodon.social/@jpteti/117094603833259184 One potential reason: delayed-location alerts require "always" location permission, whereas immediate ones just require “when using”. (Unforgetful only asks for the level it needs for the tasks you create. So if you never use delays, it sticks with "when using", and if you never use location reminders at all, it never asks for any access.) But a likely reason is that they just didn't think of it, because most to-do apps seem to be made by people with much more discipline and focus than I have. Related
Graphic designer and type designer, who created the original Macintosh icons and typefaces at Apple from 1982 and has since designed interface graphics for NeXT, Microsoft, Facebook and Pinterest.
Their words
The The point just being this is so not an exact science. And I always like to show either what a client asks for or what a programmer might have used as a placeholder because I've gotten so many good ideas that way.
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youtube.com
10 August
Security researcher; built Report URI and Security Headers, and writes about web security in practice.
8 August
Dutch bootstrapper who builds and runs their internet startups alone — Nomads.com, Remote OK, Hoodmaps, Photo AI and Interior AI — and has written about it at levels.io since 2013. Posts as @levelsio.
Their words
The problem is if nobody creates new content anymore and just asks their AI every question, the AI has nothing to train on anymore
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levels.io
29 July
Maths educator; writes Mathworlds on how mathematics is taught and why so much of the technology sold to schools does not help.
Founder of Scale AI and, since 2025, Chief AI Officer at Meta, where he leads the company’s superintelligence lab.
Their words
you know, the world is like really just, you know, barely even ready for this technology today. And I think, you know, as a builder, we have a responsibility to prepare the world, right?
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youtube.com
25 July
Computer science professor who works on fast data processing; co-author of the simdjson parser and a weekly blogger about software performance since 2004.
Memory-level parallelism: AMD is the king When your program asks for memory that is not in cache, the processor has to go to RAM. That trip costs on the order of 100 nanoseconds. On a 3 GHz core, that is about 300 cycles of doing nothing. Memory latency has not…
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24 July
Australian moral philosopher, Professor of Bioethics emeritus at Princeton University; author of Animal Liberation, Practical Ethics and The Life You Can Save.
13 July
Scottish software developer on the Statamic core team; runs a one-person business maintaining Statamic addons such as Runway and writes at duncanmcclean.com.
5 July
Writer and developer. He runs the Latent Space newsletter and podcast about AI engineering, and writes essays on software and careers at swyx.io.
18 June
Writer and former Substack product manager; publishes essays and interviews on technology, culture and China at jasmi.news.
the best part of Dialectic was observing how meticulous and intentional @jacksondahl is about *his* craft he spent this pod pressing me on every single "why" behind what I do: why quit my job, why longform, why legacy journalism, why AI. the guy asks hard questions!! Quoting @jacksondahl Jasmine Sun quit her tech job to tell the world about what she's seeing up close in Silicon Valley. Dialectic 49: @jasminewsun! I talked to her about the depth behind SF's memes, why quitting her job wasn't risky, and her "AlphaGo" moment--and why she'll keep writing anyway. Jasmine writes independ… Related
16 June
Professor of psychology at the University of Toronto and Brooks and Suzanne Ragen Professor Emeritus at Yale. Author of Against Empathy, The Sweet Spot and Psych, and writer of the Small Potatoes newsletter.
9 June
Freelance web developer and instructor. Author of the Dive Into Docker course; writes tutorials on Docker, deployment and development environments at nickjanetakis.com.
Being able to swap windows and rotate panes in tmux is handy. You can do leader + < and swap a window to the left or right in the menu. You can also do leader + { and leader + } to rotate panes. There's also leader + space to cycle pane layouts. nickjanetakis.com
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5 June
Developer, author and YouTuber covering Raspberry Pi, homelab hardware and Ansible automation. Author of Ansible for DevOps.
Their words
If this were $200 I'd complain, but not for $25. For that, it's a neat little box that maybe more people could contribute to, to make it the most handy way to jack in from a crash cart.
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jeffgeerling.com
2 June
Founder and former CEO of Zynga, the social-games company behind FarmVille, Zynga Poker and Words with Friends; says he founded ten companies in all, and wrote Life at the Speed of Play.
Their words
They vote with their clicks. You lose at least half your users every click. Every time you say click here, half people don't click. And you lose 80% when you say download this. At least that's probably 90 or more. 90% or more in the app store.
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youtube.com
14 May
Founded CD Baby in 1998 and sold it in 2008, giving the proceeds to a charitable trust for music education. Since then a writer and speaker: five books and 550+ articles, published first at sive.rs, which they hand-code and keep free of advertising.
23 April
Writer and illustrator, author of Am I There Yet? and Out of the Blue; writes the newsletter Out of the Blue on grief, joy and everyday attention.
22 April
Former L8 engineer at Meta, Microsoft and Atlassian, now writing and building solo on agentic engineering. Writes Kun's Field Notes and posts a lot about AI coding agents on X.
20 March
Founding member of OpenAI and former director of AI at Tesla; creator of nanoGPT and the term "vibe coding".
documentation
Their words
It used to be that you have documentation for other people who are going to use your library, but like you shouldn't do that anymore. Like you should have instead of HTML documents for humans, you have markdown documents for agents.
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youtube.com
10 March
Co-founder of Modem and a founding engineer at Sentry, where he went on to be VP of Engineering. Co-author of Third-party JavaScript, and co-host of the State of Agentic Coding podcast with Armin Ronacher.
18 February
Independent game developer, creator of the colony simulation RimWorld and author of Designing Games: A Guide to Engineering Experiences. Previously worked on BioShock Infinite.
The people in AI-generated videos seem conscious. Imagine a video generator that runs in real time and shows a man in an empty room. You can talk to him; he talks back. He paces around, gets bored, eats, asks questions. Is this a "video model" or a simulated universe? Related
9 February
French software engineer, public speaker and fully remote nomadic worker; writes about frontend development at maxpou.fr.
Their words
n - a super handy tool for node version management.
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maxpou.fr
13 January
Software developer and entrepreneur; co-founder of Heroku, author of The Twelve-Factor App, and a researcher at Ink & Switch.
Personal information firehose My new research project asks whether a personal algorithm, inspired by social media, can help us filter our email, group chats, and other personal correspondence.
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16 December 2025
China economy researcher based in Beijing who writes on his personal blog about Chinese political economy, history, books and music.
Their words
Out of all the reading on India I did this year to prepare for my first visit, this was my favorite: compact, punchy, and argumentative, packed with erudition and information.
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andrewbatson.com
3 February 2025
Machine-learning researcher on open language models; writes the Interconnects newsletter and the RLHF Book, after leading post-training at Ai2.
Their words
these open models are probably going to keep coming for the time being, whether or not we want to stop them, and stopping them might make it even worse and harder to prepare.
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youtube.com
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.
4 December 2024
FreeBSD developer and former FreeBSD Security Officer; founder of the Tarsnap online backup service and author of the scrypt key derivation function.
25 September 2024
Indian software developer working with React and TypeScript; writes and publishes a newsletter at sreetamdas.com.
Another fun lil' alias: Quickly switch between git branches, listed in chronological order Suuuuuuper handy and something I use multiple times a day! gist attached: Related
22 March 2024
Investigative journalist; wrote Area 51, The Pentagon's Brain and Nuclear War: A Scenario, reconstructing what secret programmes actually did from interviews and declassified records.
America
Their words
So, in addition to the Launch on Warning concept, there’s this other insane concept called Sole Presidential Authority. And you might think, in a democracy that’s impossible, right? You can’t just start a war. Well, you can just start a nuclear war if you are the commander in chief, the President of the United States. In fact, you’re the only one who can do that.
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youtube.com
3 January 2023
Swedish software developer writing about tooling, working from home and running a software business at seastone.io.
#ToolTip! This handy website lets you "read" YouTube videos, by presenting their captions side-by-side with the player, so that you can skim and jump to the parts that interest you. https://t.co/HnuGKzxJ2g #productivity Related
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