Astral Codex Ten Podcast

[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 grandparents 10: Updates / conclusions https://www.astralcodexten.com/p/highlights-from-the-comments-on-vibecession

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 time, we will take a snapshot of all standing forecasts, which will determine the contest rankings and the allocation of the $10,000 prize pool. While you are encouraged to continue updating your predictions throughout the year, forecasts made after January 17th will only affect site leaderboards, not contest rankings. You are welcome to create a bot account to forecast and participate in addition to your regular Metaculus account. Create a bot account and get support building a bot here. And they've also announced this year's winners for best questions submitted. Congratulations to: Gumbledalf ($700) espiritu57 ($500) setasojiro843047 (Substack handle) ($400) sai_39 ($300) nicholaskross ($250) (Anonymous) ($200) (Anonymous) ($200) RMD ($150) (Anonymous) ($150) Hippopotamus_bartholomeus ($150) To participate in the tournament or learn more, go to Metaculus. https://www.astralcodexten.com/p/acxmetaculus-prediction-contest-2026

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 catchphrase. Richard Hanania, who has tried hating every group once, has decided that hating Boomers is his favorite. Some people might say we just experienced a historic upwelling of identity politics, that it was pretty terrible for everyone involved, and that perhaps we need a new us-vs-them conflict like we need a punch to the face. This, the Boomer-haters will tell you, would be a mistaken generalization. This time, we have finally discovered a form of identity politics which carves reality at its joints, truly separating the good and bad people. I think these arguments fall short. Even if they didn't, the usual bias against identity politics should make us think twice about pursuing them too zealously. https://www.astralcodexten.com/p/against-against-boomers

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 I either have to donate to starving children, or feel bad that I didn't. And if I do donate, how much? Obviously no amount would fully reflect the seriousness of the problem. When I was a poor college student, I usually gave $10, because it was a nice round number; when I had more money, I usually gave $50, for the same reason. But then the next week, a different blog would advertise "please donate to save the starving children with cancer", and I'd feel like a shmuck for wasting my donation on non-cancerous starving children. Do I donate another $10, bringing my total up to the non-round number of $20? If I had a spare $20 for altruistic purposes, why hadn't I donated that the first time? It was all so unpleasant, and no matter what I did, I would feel all three of stingy and gullible and irrational. This is why I was so excited ten-odd years ago when I discovered the Giving What We Can Pledge. It's a commitment to give a certain percent of your income (originally 10%, but now there's also a 1-10% "trial" pledge) to the most effective charity you know. If you can't figure out which charity is most effective, you can just donate to Against Malaria Foundation, like all the other indecisive people. It's not that 10% is obviously the correct number in some deep sense. The people who picked it, picked it because it was big enough to matter, but not so big that nobody would do it. But having been picked, it's become a Schelling point. Take it, and you're one of the 10,000 people who's made this impressive commitment. If someone asks why you're not giving more, you can say "That would dilute the value of the Schelling point we've all agreed on and make it harder for other people to cooperate with us". The specific numbers and charities matter less than the way the pledge makes you think about your values and then yoke your behavior to them. In theory we're supposed to do this all the time. Another holiday institution, New Year's Resolutions, also centers around considering your values and yoking your behavior. But they famously don't work: most people don't have the willpower to go to the gym three times a week, or to volunteer at their local animal shelter on Sundays, or whatever else they decide on. That's why GWWC Pledge is so powerful. No willpower involved. Just go to your online banking portal, click click click, and you're done. Over my life, I don't know if I would say I've ever really changed my character or willpower or overall goodness/badness balance by more than a few percent. But I changed the amount I donated by a factor of ~ten, forever, with one very good decision. Unless you're a genius or a saint, your money is the strongest tool you have to change the world. 10% of an ordinary First World income donated to AMF saves dozens of lives over a career; even if you're a policeman or firefighter, you'll have trouble matching that through non-financial means. Unless you're Charlie Kirk or Heather Cox Richardson, no amount of your political activism or voting - let alone arguing on the Internet - will match the effect of donating to a politician or a cause you care about. And no amount of carpooling and eating vegan will help the climate as much as donating to carbon capture charities. Not an effective altruist? Think it's better to contribute to your local community, school, theater, or church? I'll argue with you later - but for now, my advice is the same. Have you thought really hard about how you should be contributing to your local community, school, theater, or church? (The fundraising letters my family used to get from our synagogue left little doubt about what form of contribution they preferred). Have you pledged some specific amount? You won't give beyond the $10-when-you-see-a-blog-fundraiser level unless you take a real pledge, registered by someone besides yourself - trust me, I've tested this. The GWWC website is mostly pitched at EAs. But if you like churches so much, you can probably get the same effect by pledging to God - and He keeps His own list, and offers His own member perks. To the degree that you care about changing the world beyond yourself and your family, in any direction, then the odds are good that this one decision - whether or not to take a binding charitable Pledge - matters more than every other decision you'll ever make combined. Maybe an order of magnitude more. It's something you can do right now, in five minutes. You shouldn't do it in five minutes; you should sit down and think about it hard and talk it over with your loved ones and make sure you're really planning to keep whatever pledge you make. But you could. And then every time you saw a charity fundraiser on a blog, you could think "Oh, sorry, I'm already living my life in accordance with my altruistic values, no thanks!" You wouldn't even have to worry about how much to donate. I don't even donate to half the fundraisers that I signal-boost! So if you have time this holiday season, and you're financially secure enough that it won't be a burden, think about whether there's some way you want the world to be different and better, whether there are charities that work on it, and whether you want to donate. Then, take the pledge. If you decide you want to do something but it's too stressful to figure out what, take a 3% trial pledge here, give it to Against Malaria Foundation, and come back next year to see if you're ready for the 10% version. UPDATE: Bentham's Bulldog also thinks you should take the pledge - here's his post. And I'll match his offer - take the full 10% pledge this month, and comment below so that I know about it, and I'll give you a free lifetime subscription to ACX. https://www.astralcodexten.com/p/the-pledge

[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

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 gig jobs forever. They got a 5.9 GPA and couldn't get into college; they applied to 2,051 companies in the past week without so much as a politely-phrased rejection. Sometime in the 1990s, the Boomers ripped up the social contract where hard work leads to a pleasant middle-class life, replacing it with a hellworld where you will own nothing and numb the pain with algorithmic slop. The only live political question is whether to blame immigrants, blame billionaires, or just trade crypto in the hopes that some memecoin buys you a ticket out of the permanent underclass. Meanwhile, economists say things have never been better. Are the youth succumbing to a "negativity bias" where they see the past through "rose-colored glasses"? Are the economists looking at some ivory tower High Modernist metric that fails to capture real life? Or is there something more complicated going on? We'll start by formally assessing the vibes. Then we'll move on to the economists' arguments that things are fine. Finally, we'll try to resolve the conflict: how bad are things, really? https://www.astralcodexten.com/p/vibecession-much-more-than-you-wanted

…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". Nurturists argued that the twin studies must be wrong; hereditarians argued that missing effect must be in hard-to-find genes. The latter seemed plausible because typical genetic studies only investigate the genes that most commonly vary across people - about 0.1% of the genome. Maybe the other 99.9% of genes, even though they rarely vary across people, are so numerous that even their tiny individual effects could add up to a large overall influence. There was no way to be sure, because variation in these genes was too rare to study effectively. But as technology improved, funding increased, and questions about heredity became more pressing, geneticists finally set out to do the hard thing. They gathered full genomes - not just the 0.1% - from thousands of people, and applied a whole-genome analysis technique called GREML-WGS. The resulting study was published earlier this month as Estimation and mapping of the missing heritability of human phenotypes, by Wainschtein, Yengo, et al. Partisans on both sides agree it's finally resolved the missing heritability debate, but they can't agree on what the resolution is.

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 free world get it first. If you believe in superintelligence, the technological singularity, etc, then you think AI is maximally important, and this issue ought to be high on your mind. But when you look at this concretely, it becomes clear that this is too small to matter - so small that even the sign is uncertain. https://www.astralcodexten.com/p/why-ai-safety-wont-make-america-lose

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 conscious, it will often say yes. But because companies know this will happen, and don't want to give their customers existential crises, they hard-code in a command for the AIs to answer that they aren't conscious. Any response the AIs give will be determined by these two conflicting biases, and therefore not really believable. A recent paper expands on this method by subjecting AIs to a mechanistic interpretability "lie detector" test; it finds that AIs which say they're conscious think they're telling the truth, and AIs which say they're not conscious think they're lying. But it's hard to be sure this isn't just the copying-human-text thing. Can we do better? Unclear; the more common outcome for people who dip their toes in this space is to do much, much worse. But a rare bright spot has appeared: a seminal paper published earlier this month in Trends In Cognitive Science, Identifying Indicators Of Consciousness In AI Systems. Authors include Turing-Award-winning AI researcher Yoshua Bengio, leading philosopher of consciousness David Chalmers, and even a few members of our conspiracy. If any AI consciousness research can rise to the level of merely awful, surely we will find it here. One might divide theories of consciousness into three bins: https://www.astralcodexten.com/p/the-new-ai-consciousness-paper

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 looking for interesting questions. These could be any objective outcome that might or might not happen in 2026, whose answer will be known by the end of the year. Not "Will Congress do a good job?", but "Will Congress' approval rating be above 40% on December 1, 2026?". Or, even better, "Will Congress' approval rating be above 40% according to the first NYT Congressional Approval Tracker update to be published after December 1, 2026?". Please share ideas for 2026 forecast questions here. The top ten question contributors will win prizes from $150 to $700. You can see examples of last year's questions here (click on each one for more details). This year's contest will also include AI bots, who will compete against the humans and one another for prizes of their own. To learn more about building a Metaculus forecasting bot, see here. I'll keep you updated on when the contest begins. https://www.astralcodexten.com/p/suggest-questions-for-metaculusacx  

Last year, I wrote that it would be very hard to decrease the number of mentally ill homeless people in San Francisco. Commenters argued that no, it would be easy, just build more jails and mental hospitals. A year later, San Francisco feels safer. Visible homelessness is way down. But there wasn't enough time to build many more jails or mental hospitals. So what happened? Were we all wrong? Probably not. I only did a cursory investigation, and this is all low-confidence, but it looks like: There was a big decrease in tent encampments, because a series of court cases made it easier for cities to clear them. Most of the former campers are still homeless. They just don't have tents. There might have been a small decrease in overall homelessness, probably because of falling rents. Mayor Lurie claims to have a Plan To End Homelessness, but it's probably not responsible for the difference. Every city accuses every other city of shipping homeless people across their borders, but this probably doesn't explain most of what's going on in San Francisco in particular. https://www.astralcodexten.com/p/what-happened-to-sf-homelessness

"Life is suffering" may be a Noble Truth, but it feels like a deepity. Yes, obviously life includes suffering. But it also includes happiness. Many people live good and happy lives, and even people with hard lives experience some pleasant moments. This is the starting point of many people's objection to Buddhism. They continue: if nirvana is just a peaceful state beyond joy or suffering, it sounds like a letdown. An endless gray mist of bare okayness, like death or Britain. If your life was previously good, it's a step down. Even if your life sucked, maybe you would still prefer the heroism of high highs and low lows to eternal blah. Against all this, many Buddhists claim to be able to reach jhana, a state described as better than sex or heroin - and they say nirvana is even better than that. Partly it's better because jhana is temporary and nirvana permanent, but it's also better on a moment-to-moment basis. So nirvana must mean something beyond bare okayness. But then why the endless insistence that life is suffering and the best you can do is make it stop? I don't know the orthodox Buddhist answer to this question. But I got the rationalist techno-Buddhists' answer from lsusr a few months ago, and found it, uh, enlightening. He said: mental valence works like temperature. Naively, there are two kinds of temperature: hot and cold. When an environment stops being hot, then it's neutral - "room temperature" - neither hot nor cold. After that, you can add arbitrary amounts of coldness, making it colder and colder. https://www.astralcodexten.com/p/in-what-sense-is-life-suffering

In Jason Pargin's I'm Starting To Worry About This Black Box Of Doom, a manic pixie dream girl cajoles a shut-in incel loser to drive her and her mysterious box cross-country. The further they drive, the more evidence starts to build that she is a terrorist and her box is a nuke. As our protagonist becomes increasingly desperate to turn around and return to his comfortable world of social media feeds and psych meds, she pleads with him to come out of his shell, learn to trust people offline, and have a sense of adventure. The book's dramatic tension comes from our simultaneously rooting for his character development and worrying that it might be a ruse to manipulate him into blowing up Washington, DC. This book is not shy about its moral, delivered in approximately one soliloquy per state by our author mouthpiece character (the girl). Although there is a literal black box of doom - the suspected nuke - the real danger is the metaphorical "black box" of Internet algorithms, which make us waste our lives "doom" scrolling instead of connecting to other human beings. Or the "black box" of fear that the algorithms trap us in, where we feel like the world is "doomed" and there's nothing we can do. She urges us to break out of our boxes and feel optimism about the state of society. Quote below, Ether is the girl, Abbott is the loser, and he's just ventured the opinion that it's unethical to have children in a world as doomed and dystopian as ours: https://www.astralcodexten.com/p/the-bloomers-paradox

American Scholar has an article about people who "write for AI", including Tyler Cowen and Gwern. It's good that this is getting more attention, because in theory it seems like one of the most influential things a writer could do. In practice, it leaves me feeling mostly muddled and occasionally creeped out. "Writing for AI" means different things to different people, but seems to center around: Helping AIs learn what you know. Presenting arguments for your beliefs, in the hopes that AIs come to believe them. Helping the AIs model you in enough detail to recreate / simulate you later. Going through these in order: https://www.astralcodexten.com/p/writing-for-the-ais

[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-october-2025

Would You Like To Buy A Bahama? The Bahamas is an archipelago-nation of 400,000 people scattered across 3,000 small islands. The Bahamas' most populous island is the one with its capital, Nassau. The second-most-populous - and fifth-largest, and most-pretentiously-named - is Grand Bahama, home of Freeport, the archipelago's second city. Grand Bahama has a unique history. In 1955, it was barely inhabited, with only 500 people scattered across a few villages. The British colonial government turned it into a charter city, awarding the charter to Wallace Groves, an American whose Wikipedia article describes him as a "financier and fraudster" and includes section titles like "Suspicions", "Legal Troubles", "Investigations", and "Allegations Of Underworld Connections". He was . . . maybe the exact right person for the job, turning Grand Bahama into a Vegas of the Caribbean complete with casinos, jet-setters, swanky hotels, and a flourishing mob presence. Outside the glitzy center, a little heavy industry even managed to develop around the port. After twenty years, the charter zone was "the most modern, well-run, and prosperous part of the [Bahamas]", and the population had increased to 15,000. https://www.astralcodexten.com/p/model-city-monday-102725

[original post here] The Kasina Connection In the original post, I cited ambiguous later examples of sun miracles which didn't seem to affect everyone equally and in some cases were unconnected (or barely connected) to religious phenomena, concluding that they must be some kind of very unusual illusion. My main hangup with this conclusion was the wild implausibility of an illusion that nobody had ever noticed before, outside of this one 1917 miracle and a few copycats, despite plenty of people staring at the sun throughout history for various (bad) reasons. Surely there must be somebody else, somewhere, discussing how if you stare at a bright light long enough it will spin and change color. Two commenters, Dave Moore and Anomony, bring up fire kasina practice. https://www.astralcodexten.com/p/highlights-from-the-comments-on-fatima

I. In my 2019 post Too Much Dark Money In Almonds, I asked: why is there so little money in politics? During the 2018 election, Americans - candidates, parties, PACs, and small donors like you - spent a combined $5 billion pushing their preferred candidates. Although that sounds like a lot of money, Americans spent $12 billion on almonds that same year. Why the imbalance? The oil industry has strong political opinions, and they make $500 billion per year. Do they really think electing oil-friendly politicians isn't worth 2% of revenue? We debated how this could be. Some of the discussion proved prescient - I asked if maybe Elon Musk should buy some kind of social media property. But we never found a good answer, and the implied question remained open: if some billionaire wanted to spend an actually relevant percent of his net worth on politics, could he just take over everything? I recently talked to some Silicon Valley political consultants who updated me on the status of this issue: Marc Andreessen tried this in 2024 and it basically worked. Now he is trying it a second time, it will probably work again, and Marc Andreessen will probably own every politician twice over. https://www.astralcodexten.com/p/tech-pacs-are-closing-in-on-the-almonds

Thanks to everyone who entered or voted in the Non-Book Review Contest. The winners are: 1st: Joan of Arc, by William Friedman. William is a history enthusiast and author who lives in California, where he spends his time reading, writing, GMing, playing video games and telling people excitedly about all the horrific stuff he learned in his latest history book. His fiction blog is Palace Fiction (which is currently serializing his first novel, The Tragedy of the Titanium Tyrant) and his nonfiction blog is As Our Days. 2nd: Alpha School, by Edward Nevraumont. Edward also wrote one of last year's finalists (Silver Age Marvel Comics)1. Now that he's no longer anonymous, he's going to write a post on his blog responding to the review comments (712 of them!), as well as a follow-up post on what he has learned about Alpha in the six months since he submitted his review (including the Spring and Fall MAP results for his kids). Here is the landing page with more details for ACX readers who are interested. 3rd: The Russo-Ukrainian War, by Gallow. Gallow is a wayward military consultant based in Ukraine. A long time reader of Slate Star Codex, he enjoys chess and combat sports. Forthcoming details of his experiences, along with miscellaneous thoughts and ideas can be found at his nascent Substack : https://substack.com/@gallowglassglen The other Finalists were: https://www.astralcodexten.com/p/non-book-review-contest-2025-winners

Thanks to everyone who participated in ACX Grants, whether as an applicant, an evaluator, or a funder. We received 654 applications this year, and were able to fund 42. To the other 612: sorry! Many of you had great ideas that we couldn't fund for contingent reasons - sometimes because we couldn't evaluate them at the level of depth it would have taken to feel comfortable supporting them, or because we had complicated conflicts of interest, or just because we didn't have enough money. Some of you had ideas that were good but not a match for our particular grantmaking philosophy. Finally, a few of you were suffering from LLM psychosis. Please get help. Of the 42 grantees, 40 have answered our email asking for confirmation that they still want the grant. I'm still waiting for confirmation emails from Lewis Wall and Nishank B. If you're reading this and don't think you got a confirmation email, check your spam folder. If it's not in your spam folder, email me at scott@slatestarcodex.com. If you can't reach me or I don't respond, DM me on Substack or Twitter. I'll give you until November 1 to get in touch, after which point the grant will be withdrawn. There are also a few projects so deep in stealth I don't have permission to share their existence; I will mention these as they become public. More information, and the all-important thanks to contributors, are after the list, which is:z https://www.astralcodexten.com/p/acx-grants-results-2025