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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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  People respond to how a price or message is framed, not just its underlying value, so communication needs to meet them at their level.

  Their words

  People are simple creatures, you have to talk to them on their level sometimes.

  Claude Mythos 5.1 and Fable 5.1: Capabilitiesthezvi.substack.com

Creator of Ruby on Rails, CTO of 37signals, and creator of Omarchy.

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  The very large productivity gains from agents require working with them directly; putting another human in between is too slow to preserve the gain.

  Omarchy

  Their words

  The revelation I've had working on Omarchy the last three months is that to get that magical 10X, 100X, in a few rare cases, 1000X productivity boost, you have to interact with the agents directly, and you cannot intermediate that bandwidth with another human because it's simply too slow.

  youtube.com

Mathematician and Senior Lecturer in the Mathematics department at Columbia University. Author of the book Not Even Wrong and of the long-running physics blog of the same name.

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  AI is being used to scam the public in science and academic communication.

  Their words

  One thing that is showing up is that, in hep-th as elsewhere, AI is being used to scam the public.

  HEP-TH and AImath.columbia.edu

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.

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  Product-market fit shows up as anger when you tell people they cannot have it yet, not as polite interest.

  Their words

  But each time there was a strong emotion and the best part there were quite a few people that really wanted it and like especially to my nontechnical friends I told them no this is not yet for you and they got mad. So if that's not an indicator to have product market fit I don't know what is.

  Peter Steinberger: "Fun Is Velocity"youtube.com

Sequoia Professor of Computer Science at Stanford, co-director of the Stanford Institute for Human-Centered AI, and co-founder and CEO of World Labs.

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  The next frontier of AI lies beyond language, because intelligence in nature ran for 500 million years before words existed.

  Their words

  The next frontier of AI as I have been saying is beyond language because again humans develop first preverbally. evolution took, you know, 500 million years without verbal communication

  youtube.com

Chief Scientist at Google DeepMind and Google Research, at Google since 1999, where he co-created MapReduce, Bigtable, TensorFlow and the TPU.

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  The numbers an AI engineer should know by heart are memory bandwidths and the energy cost of a single operation.

  energy

  Their words

  Yeah, I mean I think if you looked at what is important in AI systems these days, you would want to know things like the bandwidth between you know your main memory system on your accelerator to the onchip memory to the um you know the multiplier unit or whatever. You want to know how much energy does it take to do a single multiplier operation.

  Jeff Dean: The 1% Rule for Building in AIyoutube.com

Writer and teacher on productivity and personal knowledge management. Author of Building a Second Brain and founder of Forte Labs, which runs the course of the same name.

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  Details are the essential substance of human communication, creativity and productivity.

  Their words

  Details are the very heart and substance of human communication, creativity, and productivity.

  fortelabs.com

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.

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  The people who come up with genuinely novel insights are also unusually clear communicators of them, against the assumption that expertise spoils explanation.

  Their words

  One is it seems like there's a really strong correlation between the people who come up with genuinely novel insights and also who are actually quite clear in their communication of it.

  youtube.com

Canadian bootstrapper and writer on small software businesses. Co-founder of the podcast hosting company Transistor.fm and author of the book Marketing for Developers.

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  Face-to-face interaction conveys understanding and empathy that text-based communication does not.

  Their words

  In person, it's easier to grok where someone's coming from. It's simpler to see how they're feeling.

  We have a communication problemjustinjackson.ca

Uber's first Chief Technology Officer, from 2013 to 2020; later CTO of Coupang and of Faire.

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  A functionally organised engineering team seizes up at around a hundred people, because every feature then has to be negotiated against every other team's bandwidth.

  Their words

  every feature that we want to put out has to be queued up on mobile development bandwidth dispatch bandwidth and it become impossible to navigate tradeoff because every feature you want to do you have to go negotiate with so many team

  Scaling Uber with Thuan Pham (Uber's first CTO)youtube.com

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.

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  AI has driven the cost of generating scientific ideas to almost zero, and just as with cheap communication before it, that by itself creates no abundance.

  Their words

  So, I think AI has basically driven the cost of idea generation down to almost zero in a very similar way to how the internet drove the cost of communication down to almost zero, which is an amazing thing, but it you know, it it it doesn't make it doesn't create abundance by itself.

  youtube.com

Founder and chief analyst of SemiAnalysis; reports on semiconductor supply chains, AI datacentre economics and what the chip export controls actually do.

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  What an accelerator needs from memory is bandwidth per unit of chip edge, and on that measure ordinary DRAM is an order of magnitude behind HBM.

  Their words

  and even if you take a generous interpretation of 128 * 8 gig transfers, you're at 128 gigabytes a second for the same shoreline versus 2 and a half terabytes a second. There's a there's an order of magnitude difference in bandwidth per edge area.

  youtube.com

Software entrepreneur who bootstrapped and sold FeedbackPanda and now builds Podscan; writes The Bootstrapped Founder.

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  Direct communication with customers matters more than small, incremental product tweaks.

  Their words

  That communication with the customer is more important than minimal, gradual improvement.

  thebootstrappedfounder.com

Programmer and designer who writes at tonsky.me; author of Fira Code, DataScript and AnyBar.

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  Frontend-backend communication should be mediated through a shared database rather than a custom API.

  Their words

  Communication between frontend and backend should be handled by database

  tonsky.me

Executive coach for product leaders. Previously a partner at GV (Google Ventures) and a product manager at Google. Writes at Bring the Donuts, including a standing essential-reading list for product managers.

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  Product Management in Practice

  Their words

  Real-world, practical advice for PMs. Focused on communication, organization, research, and execution.

  bringthedonuts.com

Partner at Collaborative Fund and author of The Psychology of Money, Same As Ever and The Art of Spending Money. Writes essays on investor behavior and posts frequently on X.

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  The internet is unusual among universal technologies in having made about as much worse as it made better.

  Their words

  The internet is unique in the history of technology because there’s a list of things it improved (communication, access to information) but another list of things it likely made worse for almost everybody

  A Few Things I’m Pretty Sure Aboutcollabfund.com

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.

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  Giving a vendor brutally honest feedback helps the vendor and the customer's own company more than polite praise given out of fear

  Their words

  It isn't easy dealing with peer pressure and a room of warm and friendly staff begging you say something, anything nice about their terrible product for fear of losing their jobs -- and realizing you must be brutal to their faces otherwise you're not helping the vendor or your own company.

  Intel is listening, don't waste your shotbrendangregg.com

Founder of Telegram, and before it of VK.

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  Telegram's Secret Chats are the most secure means of communication today.

  Their words

  At the same time, if you were really paranoid, you think, I don't want to be screenshotted, I don't want to have any leaks, I don't even trust Telegram, I only trust code. Secret Chats are the best option. I believe is the most secure means of communication today.

  youtube.com

Hosts the Lex Fridman Podcast — long, unhurried conversations with scientists, engineers and public figures. Several of the interviews quoted elsewhere on this site are episodes of it.

From one piece Sundar Pichai: CEO of Google and Alphabet | Lex Fridman Podcast #471 2 beliefs, in the piece's order there

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  A meeting that wastes everyone's time is a meetings problem, not a communication problem.

  Their words

  I personally hate meetings because a significant percent of meetings when done poorly don’t serve a clear purpose. But that’s a meeting problem, that’s not a communication problem.

  youtube.com

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  Meeting in person changes what world leaders can do with each other, in a way nobody can quite articulate and remote communication has not replaced.

  Their words

  I sometimes also struggle explaining to people, articulating, why I believe meeting in person for world leaders is powerful. It just seems naive to say that, but there is something there in person

  youtube.com

Indian software engineer and co-founder of Skcript; builds web apps and writes at varunraj.in.

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  iPhone 16 Pro

  Their words

  The device I rely on for communication, entertainment, and everything in between.

  varunraj.in

Growth advisor and operator who has led growth at Miro, Amplitude, Dropbox and SurveyMonkey.

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  A single one-off email never moves a metric; email only works as a series.

  Their words

  One email will never do anything. If you're going to go into email, please think about it as a series, about communication, about how it interacts with product communication.

  youtube.com

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.

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  Bandwidth: The Untold Story of Ambition, Deception, and Innovation that Shaped the Internet Age and Dot-Com Boom

  Their words

  See an excerpt explaining why I loved reading this book.

  feld.com

Pulitzer Prize-winning reporter and author of The Power of Habit, Smarter Faster Better and Supercommunicators. Writes for The New Yorker.

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  Supercommunicators

  Their words

  A simple and tested method for communicating and connecting with anyone, Supercommunicators is an exploration of the psychology and neuroscience of communication — and how to use those skills at work, home and in life.

  charlesduhigg.com

American science-fiction writer, author of the collections Stories of Your Life and Others and Exhalation, and an essayist on artificial intelligence for The New Yorker.

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  A language model is not using language at all, because language requires an intention to communicate.

  LLMs

  Their words

  But a large language model is not a writer; it’s not even a user of language. Language is, by definition, a system of communication, and it requires an intention to communicate.

  Why A.I. Isn't Going to Make Artnewyorker.com

Egyptian front-end developer and course creator; writes for CSS-Tricks, publishes courses on Udemy and blogs at alialaa.dev.

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  Postman

  Their words

  I use MAMP for WordPress development, Postman for API testing, Notion for notes and task management, Slack and Discord for communication and Keynote for course presentations.

  alialaa.dev

Semiconductor analyst; writes Fabricated Knowledge on the chip industry and the companies in it.

From one piece Why HBM is the Hottest Thing in Memory 2 beliefs, in the piece's order there

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  High-bandwidth memory costs roughly twice the capital per bit that ordinary DRAM does, because its dies are twice the size.

  Their words

  HBM has the unique dynamic of costing a lot more than traditional DRAM, and the dynamic 2x higher capex is driven by the twice as large die size for HBM.

  Why HBM is the Hottest Thing in Memoryfabricatedknowledge.com

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  The rush to build high-bandwidth memory starves ordinary DRAM and NAND of capacity, so AI demand tightens the memory markets it never touches.

  Their words

  They will shift what cash they generate to HBM capacity, which will keep supply growth in DRAM and NAND low.

  Why HBM is the Hottest Thing in Memoryfabricatedknowledge.com

Writer and illustrator behind Wait But Why, a long-form blog of stick-figure-illustrated explainers on science, technology and society, and author of the book What's Our Problem?

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  Virtual-reality hangouts are the next step in humanity's long effort to close the gap of physical distance in communication.

  Their words

  It's the next step in a centuries-long human mission to conquer long-distance.

  All My Thoughts After 40 Hours in the Vision Prowaitbutwhy.com

Co-founder and chief executive of Meta Platforms, the company he started as Facebook in 2004.

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  Sending a model of a face beats sending pixels: a photorealistic avatar is more bandwidth-efficient than a video call.

  Their words

  So, in addition to being photorealistic, it's also actually much more bandwidth efficient than transmitting a full video or especially a 3D immersive video of a whole scene like this.

  youtube.com

Designer, architect and scientist, who led the Mediated Matter group at MIT and founded OXMAN, a company that builds products in collaboration with living organisms.

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  Living systems can be laid out on two axes, material sophistication and communication, and an organism that excels on one is usually poor on the other.

  Their words

  So if you think about entire all of nature, let's say all of living systems as a matrix that runs across two axes one is material sophistication, which is terribly relevant for designers, and the other is communication. The termites ace on communication, but their material sophistication is crap.

  youtube.com

Family therapist and founder of Relational Life Therapy. Author of I Don't Want to Talk About It, How Can I Get Through to You? and Us; argues that Western individualism is what makes couples' work hard.

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  How Can I Get Through to You?: Reconnecting Men and Women

  Their words

  How Can I Get Through to You? explores the causes of communication blocks between men and women.

  terryreal.com

Game designer; chief creative officer at Spry Fox (Triple Town, Realm of the Mad God) and author of the Lost Garden design blog.

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  People will pry open any communication channel a designer tries to close, because the need to connect is stronger than the constraint.

  Their words

  Social affordances are naturally open because humans crave social connection and will pry open channels that designers tried to close off.

  lostgarden.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.

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  Relationship Handbook

  Their words

  Best philosophy of love relationships I’ve ever found. Like meditation teaches you that moods pass, this experienced marriage counselor says this applies to relationship communication as well. When angry or insecure, don’t vent, don’t share that. Let the feeling pass. Your anger doesn’t reveal some real truth. Everyone in a romantic relationship should read this.

  sive.rs

Economist and journalist; Financial Times columnist as The Undercover Economist, author of How to Make the World Add Up, and presenter of the Cautionary Tales podcast.

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  The Complete Guide to Absolutely Everything

  Their words

  Adam Rutherford and Hannah Fry, The Complete Guide to Absolutely Everything – just delightful, wide-ranging stuff from the surely best science-communication double-act in the world. The perfect gift for the nerd in your life.

  timharford.com

Psychotherapist who trained with Jeffrey Young from 1989 and founded The Cognitive Therapy Center of New Jersey and the Schema Therapy Institutes of NJ-NYC-DC. Wrote Disarming the Narcissist.

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  Disarming the Narcissist

  Their words

  Now a self-help classic, Disarming the Narcissist is a practical, step-by-step communication guide to help you cope with and confront the narcissist in your life.

  disarmingthenarcissist.com

Designer, illustrator and CSS developer known for single-div CSS illustrations, a yearly portfolio redesign, and a set of single-topic side-project sites.

• Usesrcmnd.app

  Trello

  Their words

  For communication, I use Slack for work and community text chat, Talky for video calls, DropBox Paper for writing, Trello for task management, and regular old texts and phone calls for chatting with family.

  usesthis.com

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  Talky

  Their words

  For communication, I use Slack for work and community text chat, Talky for video calls, DropBox Paper for writing, Trello for task management, and regular old texts and phone calls for chatting with family.

  usesthis.com

Working on @ampcode. Writing registerspill.thorstenball.com. Once authored interpreterbook.com and compilerbook.com.

From one piece What you think is bad about remote work, can, well, actually be good. 2 beliefs, in the piece's order there

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  Face-to-face meetings are not inherently better than other forms of communication and can waste time just like anything else.

  Their words

  face-to-face meetings are not inherently better. They can be time wasters just like anything else.

  thorstenball.com

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  In asynchronous, text-based communication, the loudest person in the room loses influence and it shifts to the best communicators.

  remote work

  Their words

  when the main communication channels are asynchronous text and video calls (as would be the case in a remote work setup) the influence of the loudest person in the room wanes. It's transferred to the best communicators.

  thorstenball.com

British senior engineering manager at Netlify, previously a team lead at the BBC; writes about JavaScript testing, chatbots and serverless at marclittlemore.com.

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  Zoom

  Their words

  Zoom is something I use multiple times a day for video and audio communication. It's been the best video calling service I've used to date and works well for a remote working.

  marclittlemore.com