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19 September
Physician focused on longevity; wrote Outlive and hosts The Drive.
18 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.
The people dismissing this as preposterous are telling on themselves as not having thought about superintelligence seriously. I hadn’t considered this particular idea but you should expect, by definition, that something much smarter than you would have ideas you didn’t think of Quoting @firesidealpha OpenAI's Noam Brown says air-gapping the computers may not stop a misaligned AI, because two air-gapped machines can still talk by running a CPU hot and reading the temperature change "But I think the major takeaway from the incident is that people underestimated the AI. And we never want to be in… AI alignment Related
American science fiction novelist (Old Man's War, Redshirts, The Kaiju Preservation Society); has run the blog Whatever since 1998.
In fact people have met their partners on the boat, and there are "get to know each other" events and such. It happens! The cruise also (importantly) has a code of conduct policy everyone signs to get on board, which is taken seriously by the JoCo organization. Which helps people mingle comfortably. Quoting @michelesliger.bsky.social Any meet-cute stories on the nerd boat? Have you officiated a marriage of any couples who met there yet? I think if I had a chance at nerd love on the cruise, that might get me to step out of my comfort zone and go. Right now I think “nah, I’m too old for that, it’ll be nothing but young couples.” Related
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.
Their words
SOTA frontier models will still fuck you up bad behind your back, especially if you don't read your code anymore.
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@badlogicgames on X x.com
16 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.
Spreads on financing the datacenter buildout are still small enough not to seriously discourage it, but large enough to reveal that the financiers are getting nervous about a non-zero chance of a bigdeal default on their loans: **DataCenter Risk Is the Real Thing: CHART OF THE DAY** For the second day in a row, looking at debt & datacenters & Interest-rate spreads; the widening in hyperscaler datacenter build-out financing spreads is not driven by dealer hedging of new issuance… 1/ data centers Related
15 September
Co-creator of Django and creator of Datasette; writes daily at simonwillison.net.
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
Writes The Diff, a newsletter on inflections in finance and tech read by hedge fund managers, founders and VCs. Previously worked in finance at SAC Capital/Point72.
I mean, if you take AI x-risk seriously this is like saying that people who worried about early Covid don't talk enough about whether or not test swabs are biodegradable. If he's right, it's a rounding error. If he's wrong but convincing—also a rounding error! Quoting @edzitron Coxon could've mentioned the environmental catastrophe of AI data centers, or how ChatGPT has led people to killing themselves and others. Instead, he retold a dramatized and manipulative version of the Hugging Face attack that left the AI labs blameless. Related
Epidemiologist; founded Your Local Epidemiologist in March 2020 to translate public-health science, and consults for organisations including the CDC.
14 September
Co-founder and CTO of Oxide Computer Company. Created DTrace at Sun Microsystems and was CTO of Joyent; blogs about systems software, open source and engineering culture.
This kind of rhetorical slithering -- accusing those who take a quantitative claim seriously of "playing word games" -- is exactly what has so many of us exhausted. If it wasn't meant to be taken seriously than it is JUST stoking fear -- the irresponsibility of which was the point of the piece. Quoting @georgereese.imaginary.com I think taking issue with the difference between "a 10% chance of killing off humanity" vs "civilization threatening activities" is just playing word games. Related
British software developer at Laravel and creator of the Cachet open-source status page system. Podcaster; writes at james.brooks.page.
We're ISO 27001 certified 🤓 What does that mean? It means “trust us, we take security seriously” wasn't quite enough, so we got independently audited to prove it 🔐 Quoting @laravel Laravel Cloud is now ISO 27001 certified! 🎉 That's on top of SOC 2 Type II, GDPR, and HIPAA. Need our compliance certificates? Request them directly from our Trust Center → Related
13 September
Creator of the Keras deep-learning library and the ARC-AGI benchmark.
If there really is a high chance of AI leading to the extinction of humanity within years/decades, then the only rational stance towards safety monitoring and research pacing should be stringent, top-down government involvement and universally ratified international treaties. Similar to what we have been doing for a long time with nuclear energy and nuclear weapons non-proliferation. If that's not what we're doing, then we must infer that the risk isn't being seriously considered by anyone involved. There are only two options that make sense here: 1. The near-term species extinction risk is r… energy government Related
11 September
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.
Their words
Google Workspace search no longer shows folders by default in its autocomplete - meaning I need to press "enter" even when typing out the folder name I want, just to see it as the top search result after I press enter
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9 September
Deep-learning researcher and Turing Award laureate; founder of the Mila institute.
Bluesky Scientists at frontier AI labs have unique insight into the most advanced models, often seeing the associated risks months before models are released to the public. Their perspective is vital for keeping society informed and should be taken very seriously. Related
x.com Scientists at frontier AI labs have unique insight into the most advanced models, often seeing the associated risks months before models are released to the public. Their perspective is vital for keeping society informed and should be taken very seriously. wsj.com
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Front-end web developer at Paravel and co-host of the ShopTalk Show podcast; blogs at daverupert.com.
Last week @db called my podcast "slop-talk" 💀💀💀 I'm dead and still haven't recovered. But, seriously, thanks for listening. And some good recs for other podcasts at the bottom of the post too. dbushell.com
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Founder of Platformer, a newsletter on tech platforms and the people they affect, and co-host of the Hard Fork podcast at the New York Times.
3 September
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.
Both inside and outside of any organization, there are some people who will intentionally cause the organization harm. If these enemies are within your organization, you need to call them out to resolve this conflict through the organization's system for achieving such resolutions, because working with enemies within your "extended family" will undermine you and the "family." If the enemies are outside your organization and will use the information to harm you, of course don't share it. #principleoftheday Related
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.
1 September
Belgian engineering lead, Microsoft MVP and public speaker. Creator of Front Matter, a headless CMS extension for Visual Studio Code.
28 August
Co-founder of Superlogical, started in 2026 to build server-side terminal infrastructure; creator of Ghostty. Co-founded HashiCorp and created Vagrant and Terraform before that.
Quick Superlogical demo to end the week. This demo is just of the basic functionality, but I want to highlight just how FAST it is. There's a WHOLE lot more functionality already present and coming but I wanted to keep the demo short. But seriously, check out that speed. I'm showing the macOS app here and I get asked a lot so let me just say up front: its not macOS only. We're still figuring out exactly what platforms will be stable enough for the initial public release, but we're working on others. In particular, the web interface is very functional but I'll demo that another time (or someon… Related
25 August
American-Polish journalist and historian, staff writer at The Atlantic; author of Gulag, Iron Curtain, Twilight of Democracy and Autocracy, Inc.
21 August
Writer and developer. He runs the Latent Space newsletter and podcast about AI engineering, and writes essays on software and careers at swyx.io.
I think its easy to say "Simulation is a new scaling law" and treat it as marketing hyperbole, but midway along this interview you can hear me go from somewhat shitposting to very very serious. I am 2 years late to this but finally understand why @karpathy and @drfeifei backed @joon_s_pk @msbernst @percyliang et al - Smallville at the time had zero commercial applications, but if you take RSI seriously, from models automating increasingly large parts of ML research and AI engineering, the last* barrier is simulating humans and human feedback, and Simile is obviously the team to do this and al… Quoting @latentspacepod Simulating Humanity: 85% accurate digital twins, behavioral foundation models, social physics, & 8 billion agents https://t.co/ntIccXOr1y @simile_ai CEO @joon_s_pk explains how AI can move from predicting what people will do to simulating how to shape outcomes, why today’s frontier models still mis… Related
18 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.
14 August
Systems and developer-tools engineer at Cloudflare as of 2026, on durable infrastructure for AI agents; worked on React and PartyKit before that. Writes at sunilpai.dev.
11 August
Bootstrapper and investor. Founder of TinySeed and MicroConf, host of the Startups for the Rest of Us podcast, and author of several books on self-funded software startups.
I’m pretty sure I was the first person to preorder this book. Literally order #1. That’s how quickly I went from “Jason wrote a book” to “shut up and take my money.” If you follow me, MicroConf, or TinySeed, buying this book isn’t really a decision. It’s paperwork. Go buy it. Stop reading this. Seriously. Why are you still here? Quoting @asmartbear After more than a year of labor, my book 𝘏𝘪𝘥𝘥𝘦𝘯 𝘔𝘶𝘭𝘵𝘪𝘱𝘭𝘪𝘦𝘳𝘴 has launched! It's all my best ideas -- and best writing -- on how to grow your company with your existing budget and team. And yes, I read the audiobook myself. :-) 𝗕𝘂𝘆 𝗱𝗶𝗿𝗲𝗰𝘁: You can buy cheaper bundles directl… Related
9 August
Swedish essayist who writes Escaping Flatland, a newsletter of essays on relationships, thinking, writing and homeschooling.
It is interesting how little freedom there is in creativity if you take it seriously. If I’m writing a song, I have some freedom when I make the first one or two choices—picking the first section of the melody, say. But after that the form really demands what comes next: Related
5 August
Independent iOS developer and podcaster; co-hosts the Accidental Tech Podcast and Analog(ue), and makes the apps Callsheet, MaskerAid and Peek-a-View.
31 July
Co-founder and CEO of Stripe and co-founder of the Arc Institute. Keeps a personal site of reading lists, open questions and notes on scientific progress and how research is funded.
Their words
So, anyway, I'd say it like it both seemed like an obviously good idea in that people really wanted this, but also a bad idea in that nobody took it seriously. Um but I I think that I think the fact that it was ultimately the fact that it was grounded in such a concrete actual real user problem saved us.
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22 July
Founder and editor-in-chief of MacStories, writing about Apple software, iPad workflows and automation since 2009. He co-hosts the AppStories podcast.
Apple seriously added search to the TestFlight app, *and* removed sorting options, with the default now being alphabetical sorting only…? WTF? This makes TestFlight unusable for me. macstories.net
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16 July
Non-fiction writer, podcaster and occasional TV host. Author of thirteen books including The Ghost Map, Where Good Ideas Come From and Extra Life, host of the PBS series How We Got To Now, and author of the Adjacent Possible newsletter on innovation.
23 June
Canadian full-stack web developer who makes JavaScript and CSS video courses and co-hosts the Syntax podcast.
I had over 100gb of node_modules on my machine and I'm ALWAYS out of space use `npkill` to find and delete older node_module folders Related
11 June
Economist at the Hoover Institution; wrote The Fiscal Theory of the Price Level and blogs as The Grumpy Economist.
9 June
Writes jvns.ca, turning "hard and scary" topics — networking, debugging, Linux internals — into plain explanations and hand-drawn comics. Publishes Wizard Zines, illustrated programming zines. Software developer based in Montreal.
2 June
Software engineer at PlanetScale and creator of the vim-go plugin. Writes at arslan.io about Go, tooling, industrial design and books.
27 May
Senior economist at the Foundation for American Innovation; writes Second Best, and was the Niskanen Center's director of social policy before that.
24 May
Co-founder and CEO of Every. Writes the Chain of Thought column about working with AI tools and hosts the podcast AI & I.
Their words
Here's a prediction. I'm pretty sure every coding model on the market will still do this in a year. Every coding model on the market will take that instruction seriously.
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9 May
Writes Very Serious, a newsletter on politics, the economy and culture, and hosts the podcast of the same name.
From one piece
Stop Microlooting the Tax Code
2 beliefs, in the piece's order there
7 May
Software engineer; co-founder and former CTO of Tailscale, previously on the Go team at Google.
7 April
Scientist and writer on quantum computing, memory systems and metascience; co-wrote the standard quantum computation textbook and wrote Reinventing Discovery.
Their words
And I think the like the third and the most interesting possibility is no, that like they're they're a new type of object in some in some sense. They should be taken very seriously as as explanations, but where in the past we haven't had the ability to really do anything with them.
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15 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.
12 March
Swiss full-stack developer working mostly with Laravel and Vue; author of the widely used git-auto-commit-action GitHub Action.
Just published my Laracon EU 2026 recap. Lots of great talks this year — highlights for me were Dan Harrin on abstractions, Peter Suhm on unblocking users with AI, and Shane Rosenthal showing NativePHP rendering actual native iOS and Android elements. Also a good reminder to finally look more seriously at PostgreSQL. https://stefanzweifel.dev/posts/2026/03/12/laracon-eu-2026-recap/ #LaraconEU Related
12 February
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.
Their words
there’s like a line to walk between being seriously concerned, but not fearmongering because fearmongering destroys the possibility of creating something special with a thing.
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29 January
Co-founder and CEO of Until, a reversible-cryopreservation company, and previously the founder of the Longevity Fund.
Their words
people either like love it and they love it so much that they won't question it or it's like they're worried that thinking about that associating with it is a little bit too science fiction for kind of where it might be optimal for them to be focused.
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1 January
Long-time Debian developer and free-software maintainer (remctl, INN, pam-krb5) who has published book reviews on his personal site since the 1990s.
Their words
I didn't read much non-fiction this year, but the best of what I did read was Zeke Faux's Number Go Up about the cryptocurrency bubble. This book will not change anyone's mind, but it's a readable and entertaining summary of some of the more obvious cryptocurrency scams. I also had enough quibbles with it to write an extended review, which is a compliment of sorts.
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eyrie.org
26 December 2025
American author of The Subtle Art of Not Giving a F*ck and Everything Is F*cked. Writes essays and book reviews at markmanson.net.
4 Simple Steps to Change Your Life If you want to change your life—like really, seriously, no bullshit, actually change your life—do this: Step 1: Write down everything you care about. Step 2: Arrange the list from most important to least important. Step…
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19 December 2025
Founding member of OpenAI and former director of AI at Tesla; creator of nanoGPT and the term "vibe coding".
Their words
Claude Code (CC) emerged as the first convincing demonstration of what an LLM Agent looks like - something that in a loopy way strings together tool use and reasoning for extended problem solving.
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karpathy.bearblog.dev
15 December 2025
American author of Liar's Poker, Moneyball, The Big Short and The Undoing Project, and host of the podcast Against the Rules.
1 December 2025
Investment researcher and engineer who runs Lyn Alden Investment Strategy, writing on macroeconomics, currency systems and equity analysis.
Why Most Cryptocurrencies Won’t Accrue Value December 2025 For many years now, I’ve been bullish on bitcoin, and continue to be, but have not extended that view toward any other cryptocurrency. That decision continues to hold up well. Since I first recommended it…
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24 November 2025
Director of strategy at Georgetown's Center for Security and Emerging Technology; an OpenAI board member until November 2023, and writes Rising Tide.
10 June 2025
Co-founder and CEO of OpenAI; previously president of Y Combinator.
24 May 2025
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.
Their words
I mean, if ever there is, I think, a mistake that’s Britain and France should’ve been a bit more into realpolitiks than they were. It’s such an opportunity to ensure that, to snooker the Third Reich, and they don’t take it.
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5 May 2025
Astrophysicist at Barnard College; wrote Black Hole Blues and How the Universe Got Its Spots, and directs sciences at Pioneer Works.
From one piece
Janna Levin: Black Holes, Wormholes, Aliens, Paradoxes & Extra Dimensions | Lex Fridman Podcast #468
2 beliefs, in the piece's order there
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.
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Their words
So I think we’re very attached to imagining creatures like us, that manipulate technology, and I think we have to be way more imaginative if we’re going to really take seriously life in the universe.
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1 January 2025
Roboticist; co-founded iRobot and Rethink Robotics, directed the MIT AI Lab, and publishes a scorecard grading his own dated predictions about AI, robots and self-driving.
Their words, before
Such "taxi" services where the cars are also used with drivers at other times and with extended geography, in 10 major US cities NET 2025
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Their words now
This is unlikely to happen in the first half of this century.
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1 December 2024
Psychiatrist and clinical assistant professor at Case Western Reserve University. Writes Psychiatry at the Margins on the philosophical and scientific arguments inside psychiatry and the psy-sciences.
13 September 2024
Non-fiction writer, podcaster and occasional TV host. Author of thirteen books including The Ghost Map, Where Good Ideas Come From and Extra Life, host of the PBS series How We Got To Now, and author of the Adjacent Possible newsletter on innovation.
13 June 2024
Astrobiologist and theoretical physicist at Arizona State University, working on assembly theory and the physics of life.
Their words
Yeah. I think if you’re thinking about this thinking about living things as these giant causal structures or these objects that are deep in time or whatever language we end up using to describe it seems to me that consciousness is about the fact that we have a conscious experience is because we are these temporally extended objects. Consciousness and the abstraction that we have in our minds is actually a manifestation of all the time that’s rolled up in us.
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18 May 2024
Writer and consultant on technology, organizations and history; founded the blog Ribbonfarm and now writes the Contraptions newsletter.
28 April 2024
Writer and consultant on technology, organizations and history; founded the blog Ribbonfarm and now writes the Contraptions newsletter.
Revisited old favorite topics from like 1996-2003 in light of Daniel Dennett’s passing. It’s been 2 decades since I last dabbled seriously in these matters, but fun nostalgia trip to old intellectual stomping grounds open.substack.com
Related
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
3 beliefs, in the piece's order there
Their words
I don’t think that there’s any philosophical knockout objection to the simulation hypothesis. I also think that there’s absolutely no reason to take it seriously.
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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.
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energy
Their words
I think this is one of the biggest things that physics can help with, and it’s an obvious kind of low-hanging fruit situation where the heat generation, the inefficiency, the waste of existing high-level computers is nowhere near the efficiency of our brains. It’s hilariously worse, and we haven’t tried to optimize that hard on that frontier.
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26 January 2024
Senior economist at the Foundation for American Innovation; writes Second Best, and was the Niskanen Center's director of social policy before that.
13 December 2023
Theoretical computer scientist, Schlumberger Centennial Chair of Computer Science at the University of Texas at Austin and director of its Quantum Information Center. Writes the blog Shtetl-Optimized.
Their words, before
If I were forced at gunpoint to guess, I'd say that human-level AI seemed to me like a slog of many more centuries or millennia
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Their words now
I was wrong, of course, not to contemplate more seriously the prospect that AI might enter a civilization-altering trajectory, not merely eventually but within the next decade.
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Their words, before
If I were forced at gunpoint to guess, I’d say that human-level AI seemed to me like a slog of many more centuries or millennia (with the obvious potential for black swans along the way).
Show the whole quote
Their words now
I was wrong, of course, not to contemplate more seriously the prospect that AI might enter a civilization-altering trajectory, not merely eventually but within the next decade.
Show the whole quote
17 June 2023
Writer and consultant on technology, organizations and history; founded the blog Ribbonfarm and now writes the Contraptions newsletter.
26 April 2023
Programmer; makes Handmade Hero and teaches Performance-Aware Programming, and argues loudly about how software got slow.
13 December 2022
Experimental psychologist and author of the blog Experimental History, on psychology, science reform and creativity.
30 June 2022
Co-founded GiveWell and led Open Philanthropy; writes Cold Takes, on the most important century and how to think about it.
23 November 2021
Non-fiction writer, podcaster and occasional TV host. Author of thirteen books including The Ghost Map, Where Good Ideas Come From and Extra Life, host of the PBS series How We Got To Now, and author of the Adjacent Possible newsletter on innovation.
19 October 2021
Philosopher and historian of existential risk; wrote Human Extinction, and coined "TESCREAL" with Timnit Gebru for the cluster of ideologies they argue underpins the AI industry.
19 June 2021
Co-founded Neuralink and founded Science Corp, which is building a retinal implant; writes about neural interfaces and biology.
Cosmic games When I started taking the idea of AGI seriously, I noticed a shift in how I thought about the world: rather than seeing people or institutions, I just saw agents. Napoleon, Washington and Alexander, for example, are som…
AGI America 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.
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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.
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