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18 September
Writer of kottke.org, one of the oldest blogs on the web, published since 1998 and supported by its members. He writes about art, technology, science, design and visual culture.
17 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 episode of Lives Well Lived, we speak with physicist and philosopher @seanmcarroll.bsky.social about the many-worlds interpretation of quantum mechanics, the mystery of consciousness, whether morality is constructed, and how we create meaning in a universe without an objective purpose. Related
15 September
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
I don't think anyone seriously advocates "let anyone post whatever", but rather the question is (as so often) who is responsible. If the author themselves say they don't fully understand what some AI has proved, and it's wrong, then whose fault is that? Does the arXiv get the blame for allowing the content? Fwiw, I think that in this case AI solves more problems than it creates. If a paper is plausibly correct and lives up to the standards of the field, and the author has done their best, even if written by AI, why not just post it in a 'mostly AI' subsector (maybe just an extra flag for each… Quoting @Quasilocal To everyone now claiming arXiv should let everyone freely post whatever: you already have venues like that. The fact arXiv is different is literally the only value it has over those others. Related
14 September
Security technologist and author of books including Applied Cryptography and Data and Goliath; writes the Schneier on Security blog and the monthly Crypto-Gram newsletter.
Using AI for Weapons Development Last week, Anthropic released a long and detailed document describing current misuses of their Claude models. I’m still reading it, but I wanted to flag this: We identified a cell of threat actors based in northern Yeme…
Anthropic Related
12 September
Mathematical physicist at UC Riverside. Wrote This Week's Finds in Mathematical Physics and now the Azimuth blog on mathematics, physics and environmental science.
The Republican Party's midterm convention used the traditional red, white and blue decorations - but added Trump's favorite color: gold. I recommend that they use a new US flag. The traditional colors were red for blood, white for purity and blue for justice. The new version features red for blood, gold for wealth and purple for monarchy. Related
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.
9 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.
Javier Gomez-Serrano will give a special lecture at Harvard this Friday on recent developments in fluid mechanics: cmsa.fas.harvard.edu
Related
German developer; founder and lead developer of Mastodon, the decentralized open-source social network.
Whenever I see the flag of the Isle of Man I just think how good it would be at football. Related
Founded Bridgewater Associates in 1975 and led it until stepping back from control in 2022. Author of Principles, The Changing World Order and How Countries Go Broke; publishes economic analysis at economicprinciples.org.
Almost every technology boom creates a bubble, then a bust, whether it’s railroads, the Industrial Revolution, or the late 1920s. Think about the late '20s: electricity, refrigeration, telephones, radios, airplanes, and cars were all emerging at once. Naturally, people wanted to invest in these miracles. The danger is that people fail to distinguish the miracle from the investment. A technology can be truly transformative, but if the stocks are priced too high or bought on debt, you get a crash. That is the mechanics behind how bubbles form and burst. New technology will be great, there is no… energy Related
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
Physicists should put together a list of mathematically well-defined problems that could advance the field. Such as, eg, what constitutes a low-temperature superconductor, what are the lattice conditions for cold fusion (or why do they not exist), what is a local completion of quantum mechanics, what is the simplest (in terms of computational complexity) way to obtain the masses and coupling constants of the standard model, what is the UV-completion of MOND or why isn't there any, is there any provably UV-finite version of quantum gravity, etc etc Related
3 September
Co-founder and CEO of Linear; previously principal designer at Airbnb, where he led the Design Language System, and founding designer at Coinbase.
The next Loop we run at @linear is feature flag clean up: 1) @datadoghq creates an issue when the feature flag is no longer used 2) this will assign the owner of the flag, delegate the work to Linear coding agent 3) Linear removes it and opens a PR 4) Owner reviews and merges Related
1 September
Software design writer and chief scientist at Thoughtworks; wrote Refactoring and Patterns of Enterprise Application Architecture.
Fragments: September 1 Like many readers, I’m wary of AI generated prose. Simon Wilison has written an LLM cliché highlighter - paste in some text, or a URL, and it will flag various patterns common to LLMs. It references a wikipedia page of…
LLMs Related
Writes on effective altruism, energy and the arithmetic behind arguments people repeat — including how much electricity a chatbot query actually uses.
Technical staff at METR, where she works on threat modelling and risk assessment for loss-of-control risks from advanced AI.
Their words
But in many of these cases, this vulnerability is just not broad or deep enough to ever actually be exploitable to get the flag. So a bunch of exploit gym problems are just unintentionally impossible. The authors estimate roughly 30 to 40% of these problems are impossible in this way.
Show the whole quote
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19 August
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?
i’ve been using claude for all things home-related and it’s amazing. (just dump all files in and let claude index, summarize, and organize.) even better than being a repository of all receipts, it helps me maintain a spreadsheet that i can download and send to accountants, draft emails for correspondence with service providers, and proactively flag issues that i wouldn’t have realized otherwise. Quoting @money_cruncher Open a new gmail as soon as you buy a house (123house@gmailcom) Then save/forward every single receipt, invoice, quote etc to this email for all your home improvements: - replacing an entire roof - new flooring - new hvac system - building a new deck - etc These improvements raise your cost basis,… Anthropic Related
17 August
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
12 August
American open-source program lead working on WordPress; a WordPress core contributor and release lead who writes at jeffpaul.com.
Google Ads for AI chats Almost a year after predicting that AI monetization might resemble Google Ads, ChatGPT is rolling out ads with familiar mechanics like targeting, bidding, and paid placement alongside AI-generated answers. jeffpaul.com
OpenAI Google Related
10 August
Australian moral philosopher, Professor of Bioethics emeritus at Princeton University; author of Animal Liberation, Practical Ethics and The Life You Can Save.
In this episode of Lives Well Lived, we speak with physicist and philosopher @seanmcarroll.bsky.social about the many-worlds interpretation of quantum mechanics, the mystery of consciousness, whether morality is constructed, and how we create meaning in a universe without an objective purpose. Related
29 July
American software engineer; worked on code-server at Coder and teaches TypeScript and open-source contribution. Publishes at joeprevite.com.
the most difficult part of staying healthy is when life feels busy and crowded you push your workouts farther and farther out until you look up and it's 1am and you still haven't done your workout that's a big red flag - something needs to change Related
28 July
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.
Here's my conversation with Gary Gallagher, a leading historian of the American Civil War. We discuss the causes of the war, the economics and politics of slavery, military strategy, Lincoln, Grant, Lee, the Lost Cause, the Confederate Flag, and the history of extreme political division in our country from before the Civil War to today. It's here on X in full and is up everywhere else (see comment). Timestamps: 0:00 - Episode highlight 1:29 - Introduction 1:52 - What caused the Civil War? 11:49 - Slavery 39:23 - Lincoln 54:19 - Grant vs Lee 1:03:13 - Could the Civil War have been avoided? 1:1… America Related
29 June
Freelance web developer and instructor. Author of the Dive Into Docker course; writes tutorials on Docker, deployment and development environments at nickjanetakis.com.
Shout out to the @Docker Compose team. 🐳 I noticed an inconsistency in a docker compose exec vs run flag with --no-tty vs --no-TTY so I opened a PR this morning to resolve it. A few hours later it was merged: github.com
Related
15 May
Statistician and software engineer who writes R packages for reproducible research and publishing, including knitr, bookdown and blogdown.
24 April
Software engineer and writer; former CTO of Wave, now at Anthropic. Blogs at benkuhn.net on attention, engineering management and doing hard things well.
23 March
Founded Bridgewater Associates in 1975 and led it until stepping back from control in 2022. Author of Principles, The Changing World Order and How Countries Go Broke; publishes economic analysis at economicprinciples.org.
19 February
Founded Bridgewater Associates in 1975 and led it until stepping back from control in 2022. Author of Principles, The Changing World Order and How Countries Go Broke; publishes economic analysis at economicprinciples.org.
2025 Naturally, as a systematic global macro investor leaving 2025, I reflected on the mechanics of what happened, particularly in the markets.
Related
28 November 2025
Astrophysicist and coffee researcher; author of The Physics of Filter Coffee and The Physics of Espresso, and writer of the Coffee ad Astra blog on brewing science and equipment.
28 August 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.
Bluesky Guest video 3/5 while I'm on leave is now up! It's by a former SoME winner, covering key ideas in statistical mechanics to create a simple and discrete model mirroring the behavior of a fluid transitioning between a liquid and gaseous state. Enjoy! youtu.be
Related
x.com Guest video 3/5 while I'm on leave is now up! It's by a former SoME winner, covering key ideas in statistical mechanics to create a simple and discrete model mirroring the behavior of a fluid transitioning between a liquid and gaseous state. Enjoy! youtu.be
Related
23 August 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.
Bluesky Hey, psst, you can find early views for two upcoming guest videos on Patreon, one about statistical mechanics and another covering a story of modern art and group theory. Notes on early releases are always helpful before finalizing a video. patreon.com
Related
x.com Hey, psst, you can find early views for two upcoming guest videos on Patreon, one about statistical mechanics and another covering a story of modern art and group theory. Notes on early releases are always helpful before finalizing a video. patreon.com
Related
15 August 2025
Founder of Terraform Industries and formerly a physicist at NASA's Jet Propulsion Laboratory; writes about energy, space and manufacturing.
Their words
I would never like hold up a flag saying I'm really good at building highspeed trains. Like that is just a sign that you're really bad at capital allocation.
Show the whole quote
youtube.com
8 August 2025
Programmer and teacher; writes on software, learning and the web, and makes the Coding Blocks video course.
14 June 2025
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.
Their words
But I have faith that we've been doing this for centuries and we've made progress before. There's no reason why we should stop.
Show the whole quote
youtube.com
5 May 2025
Astrophysicist at Barnard College; wrote Black Hole Blues and How the Universe Got Its Spots, and directs sciences at Pioneer Works.
Their words
I’m unhappy with that. I would not be happy with information loss. I love that it’s telling us that there’s this crisis because I do think it’s giving us the clues, and we have to take them seriously.
Show the whole quote
youtube.com
23 March 2025
Founder and chief executive of Superhuman, the email client; previously founder of Rapportive, which he sold to LinkedIn; a professional game designer before that.
Their words
what is it that creates true virality? It's not viral mechanics. It's word of mouth. It is brand that this is how you can kickstart a brand.
Show the whole quote
youtube.com
22 December 2024
Astrophysicist at the University of Rochester; works on the search for life elsewhere and wrote The Little Book of Aliens and Light of the Stars.
Their words
Many of them try to pretend the measurement problem isn't there. Go to enormous lengths like the many-worlds interpretation, literally inventing an infinite number of unobservable parallel universes to avoid the thing that quantum mechanics is telling them, which is that measurements matter.
Show the whole quote
youtube.com
1 July 2024
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
22 April 2024
Theoretical physicist and philosopher, Homewood Professor of Natural Philosophy at Johns Hopkins and fractal faculty at the Santa Fe Institute. Writes the Preposterous Universe blog and hosts the Mindscape podcast.
From one piece
Sean Carroll: General Relativity, Quantum Mechanics, Black Holes & Aliens | Lex Fridman Podcast #428
2 beliefs, in the piece's order there
Their words
If you think about how we teach quantum mechanics to our students, the Copenhagen interpretation, it’s a God-awful mess. No one’s going to accuse that of being very beautiful. I’m a fan of the many-worlds interpretation of quantum mechanics, and that is very beautiful in the sense that fewer ingredients, just one equation, and it could cover everything in the world.
Show the whole quote
youtube.com
Their words
I think that that story about the latter part is completely wrong, almost 180 degrees wrong. I think that Einstein understood quantum mechanics as well as anyone, at least up through the 1930s. I think that his philosophical objections to it are correct. He should actually have been taken much more seriously about that.
Show the whole quote
youtube.com
14 February 2024
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
27 November 2023
Theoretical physicist and philosopher, Homewood Professor of Natural Philosophy at Johns Hopkins and fractal faculty at the Santa Fe Institute. Writes the Preposterous Universe blog and hosts the Mindscape podcast.
28 November 2022
General partner at Benchmark Capital for over two decades; was the lead analyst on Amazon's IPO before moving into venture capital. Writes Above the Crowd on tech and marketplace economics.
Venture Capital Red Flag Checklist In his recent bankruptcy proceeding filing, John Ray III, the new CEO and Chief Restructuring Officer at FTX, minced no words: I have over 40 years of legal and restructuring experience. I have been the Chief Restructur…
startups Related
31 October 2022
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
30 September 2022
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
19 August 2022
Physicist and science communicator. Writes Backreaction and makes videos explaining new physics and astronomy results, frequently to argue that the headline about them overstates the case.
11 December 2021
Software engineer; co-founder and former CTO of Tailscale, previously on the Go team at Google.
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A korrent is a belief a person has stated in their own words: one
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else holds it.
Nobody here wrote their own korrents. They are compiled from public
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The post itself is never changed, moved or hidden: what is set in the
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