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Kun Chen
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backpass — You don't write AGENTS.md. You train it with gradient descent.
descent gradient collect
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19 September
Italian software architect working on Microsoft 365, Azure and GitHub tooling. Microsoft MVP and GitHub Star; writes, speaks and streams about developer productivity at emanuelebartolesi.com.
15 September
Machine-learning researcher on open language models; writes the Interconnects newsletter and the RLHF Book, after leading post-training at Ai2.
An basic idea in scaling RL: Can we allocate more compute to the harder problems? We did this: If your GRPO group has all wrong completions, sample more with probability P (~0.9) -- in search of more GRPO batches with nonzero gradient. It works! The paper: arxiv.org
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Bulgarian-born writer and founder of The Marginalian (formerly Brain Pickings), a reader-funded blog on books, science, art and philosophy running since 2006.
J.R.R. Tolkien on How to Fall in Love with Life In 1964, Pantheon Books invited J.R.R. Tolkien (January 3, 1892–September 2, 1973) to write an introduction to George MacDonald’s The Golden Key, which he had praised in Tree and Leaf — the small, splendid essay collect…
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14 September
Writes Hyperdimensional, a newsletter on AI policy and governance. A White House AI policy adviser in 2025; joined OpenAI on 6 July 2026 to lead its Strategic Futures team.
“You AI people are so naive, I live in the REAL world, where [I have been consistently wrong in my predictions about AI and behind the ball on every trend related to AI, routinely making little prognostications that stochastic gradient descent joyfully stomps all over.]” Related
12 September
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.
every model provider should learn from meta's pricing model for muse spark, with fully transparent subsidization labeled for the contributor tier stop doing "in order to use our model at a good price, you must use our harness which secretly collects your data and/or upload your codebase" meta clearly proved there's a way to collect training data without relying on a harness. just be transparent about when you collect data vs not, clearly communicate how much the data is worth, and give the choice to the user and i really don't need your harness. i already have SO MANY state of the art harness… Related
Researcher and science writer. Co-founder and editor at Works in Progress magazine, formerly a researcher at Our World in Data, and author of the Scientific Discovery newsletter on science, global health and medical innovation.
I spoke too soon! Got about a dozen emails from bots trying to collect rewards from my bug bounty since yesterday. 4 were legitimate errors though very minor, relating to my vaccine discovery dataset. Quoting @scientificdiscovery.dev I'm having a similar experience, although have only received a few emails like this so far. Some are so stingy about tokens that they don't start trying to check the work unless I confirm it's eligible for a reward. Related
11 September
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.
9 September
Founder and editor-in-chief of MacStories, writing about Apple software, iPad workflows and automation since 2009. He co-hosts the AppStories podcast.
Apple’s Surprise and Shine Event: By the Numbers Apple covered a lot of ground at today’s Surprise and Shine event, and the numbers help put the announcements in perspective. After every Apple event, we like to collect the notable specs, comparisons, and other stats f…
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7 September
Writes Don't Worry About the Vase, a near-daily account of what is happening in AI and what they think it means. Former Magic: the Gathering pro and trader; unusually willing to put a number on a belief and to grade their own past calls.
23 August
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.
16 August
Interactive fiction author and hacker; wrote Spider and Web and Hadean Lands, and designed the Glulx virtual machine.
I’m accumulating a list of movies that I might watch but definitely might not. The Spine of Night Beyond the Black Rainbow The Princess & the Dragon (2026) The Descent (2006) (okay definitely not watching this one, claustrophobia is a bad one for me) Related
10 August
Founding executive editor of Wired and author of What Technology Wants and The Inevitable. Writes at kk.org and runs its long-running recommendation projects, True Films and Cool Tools.
20 July
Physician and neuroscientist at the University of Washington; researches brain health, metabolism and athletic performance.
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And we know that how you feel, so how an athlete feels is a much better predictor of their performance than their HRV or any of their blood test.
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1 May
American budget-travel writer who publishes as Nomadic Matt. Author of How to Travel the World on $50 a Day; runs nomadicmatt.com, a long-running site of destination guides, packing advice and gear recommendations.
27 April
Computer scientist and director of the MIT Digital Currency Initiative; her research covers distributed systems, databases and digital currency.
How is it possible for Iran to collect dollars? Quoting @IranIntl_En The Central Bank of Iran has opened four accounts in rials, yuan, US dollars, and euros to receive toll payments collected by the Revolutionary Guard's Navy, a senior lawmaker said on Monday. Parliament will move to make the toll system binding law at its first session by approving a bill titled “H… Related
13 April
Austrian developer. Created the libGDX game framework, and more recently the pi coding agent, which moved with them to Earendil — Armin Ronacher's company — in April 2026. Writes at mariozechner.at.
12 February
Moroccan senior frontend developer writing at smakosh.com; builds side projects and client work under Smakosh LLC.
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