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Principal engineer at Cloudflare as of 2026, on agents and developer tooling. Streams TypeScript, OCaml and Neovim on Twitch, and wrote the better-result library after writing the same Result type about a hundred times.

• Our reading nowkorrents.com

  If you can use Effect for TypeScript, you should -- to the point of not starting a new project without it.

  TypeScript

  Their words, before

  introducing better-result, my opinionated take on the rust result type for typescript after having written about 100 times npm i better-result *disclaimer*: if you can use effect-ts, you should use effect-ts

  Their words now

  every time i’ve built something without effect over the past almost 3 years ive come to deeply regret it and wish i had just done it from the start

Principal engineer at Cloudflare as of 2026, on agents and developer tooling. Streams TypeScript, OCaml and Neovim on Twitch, and wrote the better-result library after writing the same Result type about a hundred times.

• Our readingkorrents.com

  If you can use Effect for TypeScript, you should -- to the point of not starting a new project without it.

  TypeScript

  Their words

  every time i’ve built something without effect over the past almost 3 years ive come to deeply regret it and wish i had just done it from the start

  @dillon_mulroy on Xx.com

American historian of Central and Eastern Europe and the Holocaust; author of Bloodlands, On Tyranny and On Freedom, and writer of the newsletter 'Thinking about...'.

• Our readingkorrents.com

  It is entirely possible to be both morally wrong and geopolitically weak at the same time.

  Their words

  As Trump proves again and again, it is entirely possible to be both morally wrong and geopolitically weak.

  Our Trade War Against Ourselvessnyder.substack.com

Programmer; makes Handmade Hero and teaches Performance-Aware Programming, and argues loudly about how software got slow.

• Our readingkorrents.com

  The games industry already ran the experiment everyone expects from AI, when engines became licensable, and the results were not good news.

  Their words

  I've said like the licensable engine thing kind of was our AI transition already unfortunately and uh I regret to inform you that the news is not probably that positive.

  youtube.com

Programmer and teacher; writes on software, learning and the web, and makes the Coding Blocks video course.

• Readrcmnd.app

  Mindstorms: Children, Computers, And Powerful Ideas

  Their words

  The only regret I have is not reading this book 5 years earlier. Also, not every single teacher on the planet did read this — what a shame.

  rakhim.org

Swedish programmer with degrees in engineering and psychology, author of Your Code as a Crime Scene and founder of CodeScene.

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  Thinking Forth

  Their words

  Thinking Forth by Leo Brodie. I used to have this habit where I learned various programming languages. To challenge my perspective, I chose languages from families and paradigms that were fundamentally different from what I already knew. Occasionally, I stumbled upon greatness. Thinking Forth presents programming as a creative process, and it delivers those lessons in an entertaining and pedagogical way. The book is particularly strong on software analysis and design, but it's the execution and technical writing that brought the book to my top five. This is the book for anyone writing about software — Leo's way is the way to do it.

  adamtornhill.substack.com

Co-founder and CEO of OpenAI; previously president of Y Combinator.

• Our readingkorrents.com

  Sniping at people who are trying to build things is morally bankrupt and it damages the person doing it, however good the likes feel.

  Their words

  It is very easy to go take shots on Twitter and make a sarcastic comment and get a lot of likes and feel like you're doing something really important and sticking it to the man and being like, "Gary, haha, I got you, you idiot." Um, and and it will poison your soul. It is a morally bankrupt thing to do.

  youtube.com

Writes Very Serious, a newsletter on politics, the economy and culture, and hosts the podcast of the same name.

• Our readingkorrents.com

  Seeking special tax treatment that could not sustainably be extended to everyone is morally wrong.

  Their words

  it's also morally wrong to seek out special treatment that could not sustainably be offered to everyone.

  Stop Microlooting the Tax Codejoshbarro.com

Mac and iOS developer at the Iconfactory, where he has worked on apps including Twitterrific and Tot. He writes about development at furbo.org.

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  Canon MF644Cdw

  Their words

  As you’ll see below, this is not a printer that will be easy to deal with on a Mac. It will be a purchase you regret.

  furbo.org

Founded PSPDFKit in 2011 and ran it for a decade. Came back from a break to work on AI agents — the OpenClaw project, and OpenAI, joined in February 2026. Writes at steipete.me.

• Our readingkorrents.com

  Vibe coding is a slur; what he does is agentic engineering, and the after-3am kind is what you regret the next day.

  Their words

  I actually think vibe coding is a slur.

  youtube.com

Writer and researcher on China, technology and industry; author of Breakneck, research fellow at Stanford, known for a widely read annual letter.

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  1913: The Year Before the Storm

  Their words

  1913: The Year Before the Storm presents a whimsical slice of Central Europe. Art historian Florian Illies collates fragments of leading figures month by month, diary-entry style.

  danwang.co

Zurich-based value investor who ran the Aquamarine Fund from 1997 to 2025 and wrote The Education of a Value Investor. He hosts the VALUEx gathering in Klosters and publishes a podcast and newsletter.

• Our readingkorrents.com

  A culture that emphasizes self-esteem over self-knowledge leaves people less equipped to resist doing monstrous things.

  Their words

  We live in a culture that preaches self‑esteem more than self‑knowledge. That leaves people morally flabby-performing virtue while outsourcing the actual discipline that keeps ordinary humans from doing monstrous things.

  Thoughts on the Conviction of Donna Adelsonguyspier.com

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.

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  Silver Bulletin

  Their words

  He offers a unique form of grounding on political, sports and other issues, and a way of bridging my kinds of ideas into mainstream discourse. I almost never regret reading.

  thezvi.substack.com

Historian of the Second World War; wrote Normandy '44 and Brothers in Arms, and co-hosts the We Have Ways of Making You Talk podcast.

• Our readingkorrents.com

  Allied bombing and the Holocaust are not morally equivalent: had Hitler stopped the war the bombing would have stopped, while a German victory would only have accelerated the killing.

  Their words

  It’s like, no, because the moment Hitler stopped the war, the bombing would stop. The moment the war stopped in Hitler’s favor, the killing would continue and be accelerated.

  youtube.com

Historian at Stanford and the Hoover Institution; wrote Milton Friedman: The Last Conservative and Goddess of the Market, on Ayn Rand.

• Our readingkorrents.com

  Americans and their elected representatives will not vote for a universal benefit, because they believe help must be morally earned and therefore targeted.

  America

  Their words

  I think it's always going to be hard to pull off because I think Americans and their elected representatives don't want to provide a universal benefit. They want to provide a targeted benefit because they believe there's a moral component here.

  youtube.com

Machine learning engineer working on recommender systems, personalization and information retrieval. Previously worked on LLMs and LLM infrastructure at Mozilla.ai and on ML and recsys at Duo, Tumblr, Automattic and Comcast; wrote the 'What are embeddings?' text and ran the Normconf conference.

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  The Tombs of Atuan

  Their words

  The Tombs of Atuan - My only regret is that I came to Ursula K. LeGuin so late in life, and this might be my favorite of all of her books I've read so far.

  vickiboykis.com

Software engineer and essayist who writes about programming, formal methods, philosophy and literature at thoughts.wyounas.com.

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  Principles of the SPIN Model Checker

  Their words

  This book gave me both insight and a deeper curiosity about the subject. This book introduces the SPIN model checker and exposes the reader to the nuances of verifying programs using SPIN. A nice feature of the book is how it explains concepts using thoughtfully developed, freely available tools (such as jSpin) that the author created for pedagogical purposes. It's a demanding book, but the content was interesting. The book presents details about concurrency, temporal logic, non-determinism, advanced SPIN topics, and even case studies. I've already written a few blog posts about the topics I explored while reading this book, and I plan to write more. Overall, it's a good book. I'm sure I'll revisit the latter half again.

  thoughts.wyounas.com

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.

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  EMPOWERED

  Their words

  The book describing how and why empowered teams power the most best product companies like Tesla, Netflix, or Apple. My experience at Uber matches that of the book. My only regret is I could not read it earlier.

  blog.pragmaticengineer.com

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  Building a Career in Software

  Their words

  An excellent book to navigate how to grow at tech companies. I like the opinionated and concise advice Dan presents, across a variety of topics.

  blog.pragmaticengineer.com

Writer on learning and skill acquisition; author of Ultralearning and Get Better at Anything, known for the MIT Challenge and the Year Without English.

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  Why Knowledge Matters

  Their words

  In this 2016 book, Hirsch presents a sweeping curriculum change in French schools as evidence that misguided educational theories are undermining our children's learning.

  scotthyoung.com

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.

• Our reading nowkorrents.com

  Burning your bridges to force yourself forward is worth what it costs.

  On changing their mind

  There's always a chance I might never see my family again. Because of that, I often regret it. It's usually best to keep options open.

Biochemist at University College London; writes about the origin of life and the role of energy in evolution, in The Vital Question and Transformer.

• Our readingkorrents.com

  A society cannot morally be based on the way evolution works, even though competition is what drives innovation.

  Their words

  Morally, we cannot base society on the way that evolution works.

  youtube.com

Former options market maker who writes Moontower, a newsletter on trading, volatility, decision-making and how to think about risk outside markets too.

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  The Fountainhead

  Their words

  Naysayers will have a lot to object about Rand. But Roark embodied integrity. Integrity is more complicated than Rand presents. I don’t think the hardest questions are in here. But Roark is a good guide for many decisions life will throw at you even if he is an incomplete (or possibly just unfinished) hero.

  moontowermeta.com

Journalist and author of Can't Even: How Millennials Became the Burnout Generation. Writes the newsletter Culture Study, which runs a recurring links-and-recommendations issue.

• Dislikedrcmnd.app

  Brooklinen sheets

  Their words

  Instagram-influenced purchase I regret most: Brooklinen sheets

  annehelen.substack.com

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  The Sidestroke

  Their words

  Instagram-influenced purchase I regret not at all: The Summersalt Sidestroke

  annehelen.substack.com

Software engineer and founder of Block Party; previously an engineer at Pinterest and Quora, and a co-founder of the non-profit Project Include and the tech diversity data project Where are the Numbers?

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  MacBook Pro

  Their words

  I'm currently on a late 2016 MacBook Pro, 13", with a Touch Bar. I deeply regret the MBP - 1: dongle life, 2: the lack of a physical escape key makes coding in emacs very difficult, 3: the keys on the butterfly keyboard are constantly too loose or totally stuck, 4: so much beach ball.

  usesthis.com

Free software developer; maintainer of sway, wlroots, aerc and scdoc, and founder of the SourceHut (sr.ht) software forge.

• Our readingkorrents.com

  The Commons Clause does not solve open source’s funding problem; it is a framework for turning open source software into proprietary software.

  open source

  Their words

  But the Commons Clause doesn’t present a solution for supporting open source software. It presents a framework for turning open source software into proprietary software.

  The Commons Clause will destroy open sourcedrewdevault.com

Founder and chief executive of Replit. Previously an engineer at Facebook and Codecademy. Writes essays on programming, philosophy and entrepreneurship at amasad.me.

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  Society of Mind

  Their words

  which plausibly breaks down the mind into modules and presents it as if it’s a big piece of software

  amasad.me

Programmer; builds Mac and iOS apps, wrote WatermelonDB, and writes about tools, focus and software craft.

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  The Vital Question

  Their words

  A fascinating book exploring the role of energy in biology and evolution. It explains how eucaryotic life emerged and why it grew in complexity, while bacteria have remained unchanged in their simplicity for billions of years. It also presents the best theory of abiogenesis we have, and a lot more.

  radex.io

Computer scientist and professor; author of The Illustrated Guide to a Ph.D. and of a long-running blog on programming languages, research and academia.

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  ShiftIt

  Their words

  My only regret in switching from Linux to OS X is giving up the raw efficiency of tiling window managers like ion. ShiftIt makes up some of the difference.

  usesthis.com