Astral Codex Ten Podcast
Astral Codex Ten Podcast is the official audio version of Scott Alexander's blog Astral Codex Ten, with an archive of posts from his earlier blog Slate Star Codex. Each episode consists of blog posts being read aloud. It covers topics such as rationalism, science, medicine, culture, and policy. The feed offers an audio archive for readers who prefer listening.
Episodes
The Quest For Caffeine You Can Have At Night
Since the beginning of time, mankind has yearned to drink a cup of coffee at 5 PM and go to sleep at 10. But now there's an entire scientific subfield and several companies pandering to this absurd fantasy. Here's a simplified diagram of caffeine metabolism: Caffeine is converted to a different stimulating chemical called paraxanthine by a liver enzyme called CYP1A2, over a half-life of ~5 hours.
The Foothills Of Bay Area House Party
[previously in series: 1, 2, 3, 4, 5, 6, 7, 8, 9] Paul Graham once said that every city sends a message. New York says you should make more money. Berkeley says you should live better. Boston says you should be smarter. People shouldn't decide on a permanent residence until they've lived in several cities and understand their differing psychological effects. San Francisco sends a message
MacGregor The Bridge Builder
Old Scottish joke: A man at the bar is complaining: "You see that bridge there? I built it with my own hands! But do they call me 'MacGregor The Bridge-Builder'? No! And I raised five beautiful children! But do they call me 'MacGregor The Child-Raiser'? No! But, you fuck one sheep . . ." Has MacGregor been treated unfairly? https://www.astralcodexten.com/p/macgregor-the-bridge-builder
Open Questions On Open Weights
Last month, some of Silicon Valley's biggest companies signed an open letter supporting open-weights AI. Open weights AI is like open-source software, where the creator makes the raw code publicly available for free download. It's good insofar as it's the only way an AI can truly be the user's property, as opposed to something that companies like OpenAI or Anthropic temporarily let you use subjec
The Beauty Of Settled Science
Commenters convinced me I made a subtle mis-step in my framing of Psychology Research Is Mostly Fine. My framing emphasized that social priming studies had failed to replicate, but that many other subfields of psychology hadn't. This naturally led commenters to point to failed replications in other subfields. Although none of these were as bad as social priming, few or none were entirely problem-
Does Forecasting Have Room At The Top?
Superforecasting is the art/science/sport of predicting the future - for example, who will win elections, which countries will fight wars, when key technologies will be discovered. Over the past few years, it went from an obscure academic subfield to a multibillion dollar industry in the form of prediction markets. More recently, AI superforecasters have come close to the accuracy of top humans, a
Your Book Review: The Epic Of Gilgamesh
Finalist #4 in the Book Review Contest [This is one of the finalists in the 2026 book review contest, written by an ACX reader who will remain anonymous until after voting is done. I'll be posting about one of these a week for several months. When you've read them all, I'll ask you to vote for a favorite, so remember which ones you liked] Introduction: He Who Saw the Deep I've been thinking, latel
Highlights From The Discourse On The Hugging Face Incident
[Original here. Like a Highlights From The Comments post, but including discussion from around the Internet.] Roon is an OpenAI researcher whose popular Twitter presence has catapulted him to the status of extremely-unofficial company representative. He seems spooked: https://www.astralcodexten.com/p/highlights-from-the-discourse-on
Links For July 2026 (Part 2)
[continued from Part 1 here. I haven't independently verified each link. On average, commenters will end up spotting evidence that around two or three of the links in each links post are wrong or misleading. I correct these as I see them, and will highlight important corrections later, but I can't guarantee I will have caught them all by the time you read this.] https://www.astralcodexten.com/p/l
Psychology Research Is Mostly Fine
People act like the replication crisis has discredited psychology, that the field is now widely agreed to be a sham, that it can be uncontroversially held up as an example of science gone wrong. These statements are often made in the broadest possible terms: https://www.astralcodexten.com/p/psychology-research-is-mostly-fine
The Hugging Face Incident
You've probably heard about this one by now. If not, you can get up to speed with OpenAI's statement, The story: OpenAI was testing an unreleased AI (rumored to be GPT-6)1. During a cybersecurity test called ExploitGym, the AI tried to cheat by hacking an unrelated AI startup called Hugging Face2 which it thought might have the answer key on its servers3. Despite being supposedly unable to access
Your Book Review: Breakdown In Pakistan
[This is one of the finalists in the 2026 book review contest, written by an ACX reader who will remain anonymous until after voting is done. I'll be posting about one of these a week for several months. When you've read them all, I'll ask you to vote for a favorite, so remember which ones you liked] A couple of decades ago in Kabul, a fellow aid worker on his third beer came up with a vivid simil
Links For July 2026 (Part 1)
[I haven't independently verified each link. On average, commenters will end up spotting evidence that around two or three of the links in each links post are wrong or misleading. I correct these as I see them, and will highlight important corrections later, but I can't guarantee I will have caught them all by the time you read this.] 1: You Are Quoting Bentham: Shakespeare gets credit for coining
Contra Pritchard On Liberal Happiness
Cassie Pritchard, on Twitter: I get why so many liberals are fundamentally disdainful of democracy these days—it's because liberalism is exhausted. It's out of answers. Liberalism won, it delivered the world it promised, and people still aren't content. They're not satisfied. So the people must be wrong. We are unfathomably richer than our ancestors. Output per capita in America today is on the o
Your Book Review: Great And Desperate Cures
Finalist #2 in the Book Review Contest [This is one of the finalists in the 2026 book review contest, written by an ACX reader who will remain anonymous until after voting is done. I'll be posting about one of these a week for several months. When you've read them all, I'll ask you to vote for a favorite, so remember which ones you liked] I. SURGERY FOR THE SOUL [content warning: this review is ab
Against "Stochastic Terrorism"
"Stochastic terrorism" is the idea that if you spread fear and mistrust against a target, then eventually people will commit violence against that target, and it will be your fault, even if you never specifically said the words "you should commit violence". Some other popular examples of the concept: Nativists spread fear and mistrust about Muslim immigrants, and then racists go on shooting spre
AI Chip Regulation Is Not A Dystopian Surveillance State
This was one of the most common objections to Plan A. The plan proposes AI chip regulation to ensure that both China and America know where all the chips are, making their deal to regulate AI together "trustless" (ie neither side can defect even if they want to). Several people argued that this kind of regulation amounted to some kind of "Orwellian dystopia" or "global panopticon". I'm reminded of
Introducing Plan A
A Is For America It's increasingly clear that nobody has a plan for if this AI thing turns out to be real. Some people have suggestions, but they're all things like "regulate a little more" or "regulate a little less" or "react to things as they come up". This won't be enough. Not just because things may move too quickly - although they will - but because in order to regulate or react, you need to
Your Book Review: The Book Of Abraham
[This is one of the finalists in the 2026 book review contest, written by an ACX reader who will remain anonymous until after voting is done. I'll be posting about one of these a week for several months. When you've read them all, I'll ask you to vote for a favorite, so remember which ones you liked] Part 1. The Book of Abraham opens with this paragraph: "A Translation of some ancient Records tha
The AI Superforecasters Are Here
The annual prediction market conference was earlier this month. This was the year prediction markets went from an obscure hobby to a multi-billion dollar industry; from semi-illegal to having the President's son as an advisor. I can't remember if anyone talked about any of that. It didn't even register. All eyes were on the AI superforecasters. I met an AI superforecaster startup founder who told
Chip Off The Old Block
I. Having kids has given me new appreciation for old poetry. The first time I read Song of Hiawatha, I skimmed over the part in Book 3 where Hiawatha first meets his father Mudjekeewis: Filled with joy was Mudjekeewis When he looked on Hiawatha, Saw his youth rise up before him In the face of Hiawatha, Saw the beauty of Wenonah From the grave rise up before him. "Welcome!" said he, "Hiawatha, To
The Metaculus Threat To Democracy Index
In recent posts on Trump and dictatorship, people have asked me - how do you know you're not suffering from Trump Derangement Syndrome? I take this seriously; we've all lost loved ones to this condition. The best check on my reasoning would be an objective measure of the health of American democracy. There are several "democracy indices" that purport to do this, but they have a mixed reputation.
Should People Avoid Whole-Body Screening Info?
The most controversial part of last week's article on the Midjourney ultrasound scanner was medical experts' recommendation against whole-body screening (including existing whole-body screening technology using MRI). Isn't this crazy? Whole-body screening can save lives by detecting serious diseases like cancer. The experts counterargue that it finds so many false positives - minor zit-like imperf
Preliminary Thoughts On The Midjourney Scanner
like that, except from a medium-sized startup instead of a tech giant. Earlier today, they announced a pivot to medical scanners. The new MidJourney Scanner, which they describe as "a bold new kind of machine to reimagine the foundations of healthcare and our relationships to our bodies", will be a tank of water surrounded by a ring of ultrasound scanners. The patient goes into the tank, the sca
Waiting For The Miracle
In 1917, three children in Fatima, Portugal claimed to have seen the Virgin Mary. They promised she would perform a miracle on a certain day in October. Nearly 100,000 pilgrims arrived, hoping to see whatever happened, and nearly all report that the sun turned pale, changed color, and spun around. Many other writers have investigated the children and their visions, but I was fixated on this sun mi
Never Cross a River Four Feet Deep on Average
Guest post by Alexander "Sasha" Putilin [This is a guest post by 2024 ACX grantee Sasha Putilin. I encourage any ACX grantees who are interested to write about their projects. - SA] The results of my ACX Grants 2024 project are in. The project attempted to replicate the 2023 study "Learning at your brain's rhythm: individualized entrainment boosts learning for perceptual decisions". It claimed tha
My AI Opinions
I recently had a minor spat over someone misinterpreting my AI beliefs (see section marked "Update" at the bottom here), so I thought I would list them in one place, so I can refer people when they ask. Timelines1 Define AGI as AI intelligent enough to do 90% of knowledge work jobs. I think there's a 25% chance of AGI by 20272, a 50% chance by 2034, and a 75% chance by 2045. Basic argument: In
Book Review: The Dialectical Imagination
The philosophers of the Frankfurt School practiced a technique called negative dialectics, where concepts are defined as much by what you can't say about them as what you can. Appropriately, the Frankfurt School has ended up defined by what you can't say about them. You can't say that they invented a new form of left-wing thought called Cultural Marxism. This would be (according to Wikipedia) the
Use AI This Election
I'm not saying AI is superintelligent or can decide better than you can. I'm saying that if you - like me - spend an hour or so doing research before voting on local seats, AI can aid that research very effectively. And if you don't do that research - because you weren't willing to waste an hour on it before - AI makes it so much faster that you might want to start. I gave Claude a prompt somethin
New Paradigms Won't Save You
One popular objection to AI concerns is to declare that LLMs can never be AGI. You need a "new paradigm". Therefore, AGI is so far in the future that it's not worth worrying about. A common counterargument is to claim that no, LLMs can become AGI. But even without that counterargument, I think the "therefore" fails on its own terms. The key question is: how much of a new paradigm do we need? The l
The Types Of Candidate You Find In The California Gubernatorial Race
Sorry, I give up. In past elections, I've covered every single candidate for governor of California, from the incumbents all the way down to the cranks. In 2022 there were twenty-six of them, and I covered them all. But sorry, I give up. This year there are sixty. It's too many. I can't disambiguate them all into unique individuals with their own personalities, hopes, and dreams. So as consolatio
The Sigmoids Won't Save You
"All exponentials eventually become sigmoids" is an annoying AI talking point. If someone presents a graph like this… ….and points out that it seems like AI capabilities could soon reach the level marked "High", then the height of intelligent debate is to point out that actually, the trend could go like this: …and then it would never reach the level marked "High"! In slogan form, this is "all expo
Nostalgebraist's Hydrogen Jukeboxes
In conclusion, the only good theory of taste is Nostalgebraist's. He wrote a post called Hydrogen Jukeboxes, analyzing the literary output of an AI called R1. This AI tried hard to write good fiction, which was part of the problem. It crammed its stories with what Nostalgebraist called (stealing a term from Ginsberg) the "eyeball kick" - a flashy stylistic move that immediately catches the read
Three Model Organisms For Taste
(a continuation of yesterday's post) Reddit Vexillology Vexillology is the c. elegans of aesthetics - the simplest model organism that lets us observe dynamics of interest. I haven't read enough MFA books to do more than relay the thoughts of my betters, and you probably haven't either. But anyone can have opinions on flags. If you're like me, you learned the following code of good flags: They s
Contra Everyone On Taste
Last year I wrote a piece on artistic taste, which got many good responses from (eg) Ozy, Frank Lantz, and Sympathetic Opposition. I tastelessly forgot to respond to them until now, but I appreciate how they forced me to refine my thinking. In particular, they helped me realize that "taste" and "good art" are hard to talk about, because the discussions conflate many different things: 1: S
What Deontological Bars?
Constraint consequentialists believe that you should try to do good things that improve the world, unless those break hard-and-fast rules ("deontological bars"). For example, you shouldn't assassinate democratically-elected leaders, even very bad ones. Why not? Since bad leaders set bad policy, and bad policy can kill many thousands of people, wouldn't it be for the greater good? Because there's a
Your Attempt To Solve Debate Will Not Work
As a blogger, I hear about lots of projects to "solve debate", or "disagree better", or "map arguments". Often these are ACX grant applications. I always turn them down. They're well-intentioned, sophisticated, and doomed. I appreciate that Internet arguments usually don't go well, that there are lots of ways to improve them, and that this is a worthy cause. But I've also seen a dozen projects of
Links For April 2026
[I haven't independently verified each link. On average, commenters will end up spotting evidence that around two or three of the links in each links post are wrong or misleading. I correct these as I see them, and will highlight important corrections later, but I can't guarantee I will have caught them all by the time you read this.] https://www.astralcodexten.com/p/links-for-april-2026
Half A Month Of Consolation Writing Advice
This month, rationalist institution Lighthaven is running their second Inkhaven, a bootcamp for aspiring bloggers. Participants have to publish a post a day, or they get kicked out. You can read their posts here. I'm too old to manage that pace, but agreed to participate as an advisor. Then I missed the first half of the month because I was on a trip. As compensation, here are fifteen pieces of wr
Orban Was Bad, Even Though We Don't Have A Perfect Word For His Badness
Viktor Orban, __________ of Hungary for sixteen years, lost his re-election bid earlier this week. The simplest phrase to put in the blank is "prime minister". Some people have proposed more loaded terms like "strongman", "autocrat", and "dictator". But he did lose his re-election bid earlier this week, prompting comments that these more loaded terms, especially the d-word, might have been hyperb
Against The Concept Of Telescopic Altruism
I. "Telescopic altruism" is a supposed tendency for some people to ignore those close to them in favor of those further away. Like its cousin "virtue signaling", it usually gets used to own the libs. Some lib cares about people in Gaza - why? Shouldn't she be thinking about her friends and neighbors instead? The only possible explanation is that she's an evil person who hates everyone around her,
A Buddhist Sun Miracle?
In 1917, some Portuguese children started seeing visions of the Virgin Mary. The Virgin told them she would enact a great miracle on a certain day in October, and a crowd of 100,000 gathered to witness the event. According to eyewitness reports, newspaper articles, etc, they saw the sun spin around, change colors, and do various other miraculous things. At least a hundred separate testimonies of t
How Natural Tradeoff And Failure Components?
Michael Halassa: Did John Nash Really Have Schizophrenia? is a good article on the genetics of psychosis. Previous research found that schizophrenia genes decreased IQ but increased educational attainment. Usually IQ and education are correlated, so this was surprising. The new research finds two components to schizophrenia genetic risk. The first component, shared with bipolar, increases educati
Every Debate On Pausing AI
SUPPORTER: America needs to start talking to China to come up with a bilateral agreement to pause AI. The agreement would need to be transparent, mutually enforceable, and… OPPONENT: We can't unilaterally pause AI! China would destroy us! SUPPORTER: As I said, we need to start negotiating a bilateral agreement so that both sides will… OPPONENT: You fool! Don't you know that while we unilaterally p
Being John Rawls
I. John Rawls was born in Baltimore, Maryland, on February 21, 1921. Not John Rawls the famous liberal philosopher (or, rather, John Rawls the famous liberal philosopher was also born in Baltimore, Maryland on February 21, 1921, but he is not the subject of our story). This is John Rawls the alcoholic. John Rawls the alcoholic was twelve when they lifted Prohibition. He partook immediately, and dr
Support Your Local Collaborator
Every few weeks, a Trump administration official comes up with an insane plan that would devastate some American industry, region, or demographic. Maybe an Undersecretary of the Interior decides that aluminum is "woke" and should be banned. They circulate a draft order saying it will be illegal for US companies to use aluminum, starting in two weeks, Thank You For Your Attention To This Matter. Ne
Shameless Guesses, Not Hallucinations
I hate the term "hallucinations" for when AIs say false things. It's perfectly calculated to mislead the reader - to make them think AIs are crazy, or maybe just have incomprehensible failure modes. AIs say false things for the same reason you do. At least, I did. In school, I would take multiple choice tests. When I didn't know the answer to a question, I would guess. Schoolchild urban lege
Last Rights
Guest post by David Speiser The Problem Everyone hates Congress. That poll showing that cockroaches are more popular than Congress is now thirteen years old, and things haven't improved in those thirteen years. Congressional approval dipped below 20% during the Great Recession and hasn't recovered since. A republic where a supermajority of citizens neither like nor trust their representatives
SEIU Delenda Est
California lets interest groups propose measures for the state ballot. Anyone who gathers enough signatures (currently 874,641) can put their hare-brained plans before voters during the next election year. This year, the big story is the 2026 Billionaire Tax Act, a 5% wealth tax on California's billionaires. Your views on this will mostly be shaped by whether or not you like taxing the rich, but o
Mantic Monday: Groundhog Day
Having Your Own Government Try To Destroy You Is (At Least Temporarily) Good For Business On Friday, the Pentagon declared AI company Anthropic a "supply chain risk", a designation never before given to an American company. This unprecedented move was seen as an attempt to punish, maybe destroy the company. How effective was it? Anthropic isn't publicly traded, so we turn to the prediction market
"All Lawful Use": Much More Than You Wanted To Know
Last Friday, Secretary of War Pete Hegseth declared AI company Anthropic a "supply chain risk", the first time this designation has ever been applied to a US company. The trigger for the move was Anthropic's refusal to allow the Department of War to use their AIs for mass surveillance and autonomous weapons. A few hours later, Hegseth and Sam Altman declared an agreement-in-principle for OpenAI's
Next-Token Predictor Is An AI's Job, Not Its Species
I. In The Argument, Kelsey Piper gives a good description of the ways that AIs are more than just "next-token predictors" or "stochastic parrots" - for example, they also use fine-tuning and RLHF. But commenters, while appreciating the subtleties she introduces, object that they're still just extra layers on top of a machine that basically runs on next-token prediction. I want to approach this fr
The Pentagon Threatens Anthropic
Here's my understanding of the situation: Anthropic signed a contract with the Pentagon last summer. It originally said the Pentagon had to follow Anthropic's Usage Policy like everyone else. In January, the Pentagon attempted to renegotiate, asking to ditch the Usage Policy and instead have Anthropic's AIs available for "all lawful purposes"1. Anthropic demurred, asking for a guarantee that t
Malicious Streetlight Effects Vs. "Directional Correctness" - A Semi-Non-Apology
Malicious streetlights are an evil trick from Dark Data Journalism. Some annoying enemy has a valid complaint. So you use FACTS and LOGIC to prove that something similar-sounding-but-slightly-different is definitely false. Then you act like you've debunked the complaint. My "favorite" example, spotted during the 2016 election, was a response to some #BuildTheWall types saying that illegal immigrat
Book Review Contest Rules 2026
It's that time again. Even numbered years are book reviews, odd-numbered years are non-book reviews, so you're limited to books for now. Write a review of a book. There's no official word count requirement, but previous finalists and winners were often between 2,000 and 10,000 words. There's no official recommended style, but check the style of last time's finalists and winners or my ACX book rev
Crime As Proxy For Disorder
The problem: people hate crime and think it's going up. But actually, crime barely affects most people and is historically low. So what's going on? In our discussion yesterday, many commenters proposed that the discussion about "crime" was really about disorder. Disorder takes many forms, but its symptoms include litter, graffiti, shoplifting, tent cities, weird homeless people wandering about
Record Low Crime Rates Are Real, Not Just Reporting Bias Or Improved Medical Care
Last year, the US may have recorded the lowest murder rate in its 250 year history. Other crimes have poorer historical data, but are at least at ~50 year lows. This post will do two things: Establish that our best data show crime rates are historically low Argue that this is a real effect, not just reporting bias (people report fewer crimes to police) or an artifact of better medical care (victi
What Happened With Bio Anchors?
[Original post: Biological Anchors: A Trick That Might Or Might Not Work] I. Ajeya Cotra's Biological Anchors report was the landmark AI timelines forecast of the early 2020s. In many ways, it was incredibly prescient - it nailed the scaling hypothesis, predicted the current AI boom, and introduced concepts like "time horizons" that have entered common parlance. In most cases where its contempor
Political Backflow From Europe
The European discourse can be - for lack of a better term - America-brained. We hear stories of Black Lives Matter marches in countries without significant black populations, or defendants demanding their First Amendment rights in countries without constitutions. Why shouldn't the opposite phenomenon exist? Europe is more populous than the US, and looms large in the American imagination. Why shoul
Links For February 2026
[I haven't independently verified each link. On average, commenters will end up spotting evidence that around two or three of the links in each links post are wrong or misleading. I correct these as I see them, and will highlight important corrections later, but I can't guarantee I will have caught them all by the time you read this.] https://www.astralcodexten.com/p/links-for-february-2026
Moltbook: After The First Weekend
[previous post: Best Of Moltbook] From the human side of the discussion: As the AIs would say, "You've cut right to the heart of this issue". What's the difference between 'real' and 'roleplaying'? One possible answer invokes internal reality. Are the AIs conscious? Do they "really" "care" about the things they're saying? We may never figure this out. Luckily, it has no effect on the world, so we
Best Of Moltbook
Moltbook is "a social network for AI agents", although "humans [are] welcome to observe". The backstory: a few months ago, Anthropic released Claude Code, an exceptionally productive programming agent. A few weeks ago, a user modified it into Clawdbot, a generalized lobster-themed AI personal assistant. It's free, open-source, and "empowered" in the corporate sense - the designer talks about how
Slightly Against The "Other People's Money" Argument Against Aid
In the comments to last year's USAID post, Fabian said: While i am happy for the existence of charity organisations, i don't get why people instead of giving to charity are so eager to force their co-citizens to give. If one charity org is not worth getting your personal money, find another one which is. But don't use the tax machine to forcefully extract money for charity. There are purposes wh
Highlights From The Comments On Scott Adams
[original post: The Dilbert Afterlife] Table of Contents: 1: Should I Have Written This At All? 2: Was I Unfair To Adams? 3: Comments On The Substance Of The Piece 4: The Part On Race And Cancellation (INCLUDED UNDER PROTEST) 5: Other Comments 6: Summary/Updates https://www.astralcodexten.com/p/highlights-from-the-comments-on-scott
The Dilbert Afterlife
Thanks to everyone who sent in condolences on my recent death from prostate cancer at age 68, but that was Scott Adams. I (Scott Alexander) am still alive1. Still, the condolences are appreciated. Scott Adams was a surprisingly big part of my life. I may be the only person to have read every Dilbert book before graduating elementary school. For some reason, 10-year-old-Scott found Adams' stories o
Mantic Monday: The Monkey's Paw Curls
The Monkey's Paw Curls Isn't "may you get exactly what you asked for" one of those ancient Chinese curses? Since we last spoke, prediction markets have gone to the moon, rising from millions to billions in monthly volume. For a few weeks in October, Polymarket founder Shayne Coplan was the world's youngest self-made billionaire (now it's some AI people). Kalshi is so accurate that it's getting ca
SOTA On Bay Area House Party
[previously in series: 1, 2, 3, 4, 5, 6, 7, 8] Every city parties for its own reasons. New Yorkers party to flaunt their wealth. Angelenos party to flaunt their beauty. Washingtonians party to network. Here in SF, they party because Claude 4.5 Opus has saturated VendingBench, and the newest AI agency benchmark is PartyBench, where an AI is asked to throw a house party and graded on its per
The Permanent Emergency
One morning around 6, the police banged on our door. "OPEN UP!" they shouted, the way police shout when they definitely have an alternative in mind for if you won't. I was awake at the time, because the kids were up early and I was on shift. I opened the door. The cops seemed mollified by the fact that I was carrying twin toddlers and looked too frazzled to commit any difficult crimes. They said t
Highlights From The Comments On Boomers
[original post: Against Against Boomers] Before getting started: First, I wish I'd been more careful to differentiate the following claims: Boomers had it much easier than later generations. The political system unfairly prioritizes Boomers over other generations. Boomers are uniquely bad on some axis like narcissism, selfishness, short-termism, or willingness to defect on the social contract. A
You Have Only X Years To Escape Permanent Moon Ownership
If you're not familiar with "X years to escape the permanent underclass", see the New Yorker here, or the Laine, Bear, and Trammell/Dwarkesh articles that inspired it. The "permanent underclass" meme isn't being spread by poor people - who are already part of the underclass, and generally not worrying too much about its permanence. It's preying on neurotic well-off people in Silicon Valley, who
Highlights From The Comments On Vibecession
[Original post: Vibecession - Much More Than You Wanted To Know] Table of Contents 1: When was the vibecession? 2: Is the vibecession just sublimating cultural complaints? 3: Discourse downstream of the Mike Green $140K poverty line post 4: What about other countries? 5: Comments on rent/housing 6: Comments on inflation 7: Comments on vibes 8: Other good comments 9: The parable of Calvin's grandp
ACX/Metaculus Prediction Contest 2026
This year's prediction contest is live on Metaculus. They write: This year's contest draws directly from that community, with all questions suggested by ACX readers. Both experienced forecasters and newcomers are invited to participate, making predictions across U.S. politics, AI, international affairs, and culture. To participate, submit your predictions by January 17th at 11:59 PM PT. At that
Against Against Boomers
Hating Boomers is the new cool thing. Amazon offerings include A Generation Of Sociopaths: How The Baby Boomers Betrayed America, the two apparently unrelated books How The Boomers Took Their Children's Future and How The Boomers Stole Millennials' Future, and Boomers: The Men And Women Who Promised Freedom But Delivered Disaster. "You don't hate Boomers enough" has become a popular Twitter cat
The Pledge
This holiday season, you'll see many charity fundraisers. I've already mentioned three, and I have another lined up for next week's open thread. Many great organizations ask me to signal-boost them, I'm happy to comply, and I'm delighted when any of you donate. Still, I used to hate this sort of thing. I'd be reading a blog I liked, then - wham, "please donate to save the starving children". Now
Links For December 2025
[I haven't independently verified each link. On average, commenters will end up spotting evidence that around two or three of the links in each links post are wrong or misleading. I correct these as I see them, and will highlight important corrections later, but I can't guarantee I will have caught them all by the time you read this.] https://www.astralcodexten.com/p/links-for-december-2025
Vibecession: Much More Than You Wanted To Know
The term "vibecession" most strictly refers to a period 2023 - 2024 when economic indicators were up, but consumer sentiment ("vibes") was down. But on a broader level, the whole past decade has been a vibecession. Young people complain they've been permanently locked out of opportunity. They will never become homeowners, never be able to support a family, only keep treading water at precarious gi
The Good News Is That One Side Has Definitively Won The Missing Heritability Debate
…the bad news is that they can't agree which one. I explained the debate more here, but the short version is: twin studies find that most traits are at least 50% genetic, sometimes much more. But molecular studies - that is, attempts to find the precise genes responsible - usually only found enough genes for the traits to be ~10-20% genetic. The remaining 35% was dubbed "missing heritability". Nu
Why AI Safety Won't Make America Lose The Race With China
If we worry too much about AI safety, will this make us "lose the race with China"1? (here "AI safety" means long-term concerns about alignment and hostile superintelligence, as opposed to "AI ethics" concerns like bias or intellectual property.) Everything has tradeoffs, regulation vs. progress is a common dichotomy, and the more important you think AI will be, the more important it is that the f
The New AI Consciousness Paper
Most discourse on AI is low-quality. Most discourse on consciousness is super-abysmal-double-low quality. Multiply these - or maybe raise one to the exponent of the other, or something - and you get the quality of discourse on AI consciousness. It's not great. Out-of-the-box AIs mimic human text, and humans almost always describe themselves as conscious. So if you ask an AI whether it is consciou
Suggest Questions For Metaculus/ACX Forecasting Contest
ACX has been co-running a forecasting contest with Metaculus for the past few years. Lately the "co-running" has drifted towards them doing all the work and giving me credit, but that's how I like it! Last year's contest included more than 4500 forecasters predicting on 33 questions covering US politics, international events, AI, and more. They're preparing for this year's contest, and currently
