Astral Codex Ten Podcast

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 ti...

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...

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...

[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 gi...

…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...

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...

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...

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 l...

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? Prob...

"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 sound...

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 f...

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...

[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 inh...

[ 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 ha...

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 str...

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 (...

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 becau...

The following three things can't all be true simultaneously: Many Americans are fascists Fascists are an acceptable target for political violence Political violence in America is morally unacceptable (at the current time) I thought about this while following the Twitter spat between Democratic hopeful Gavin Newsom and Trump advisor Stephen Miller. Newsom called Miller fascist; Miller accused this...

https://www.astralcodexten.com/p/the-fatima-sun-miracle-much-more 0: Here Comes The Sun In 1917, three Portuguese children reported a vision of the Virgin Mary. She promised to return to them on the 13th of each month. On the sixth month - October 13th - she would perform a great miracle. Rumors spread, and on the 13th of each month, crowds gathered to watch the children speak to an apparition tha...

[This is one of the finalists in the 2025 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] You Can Just Do Things In the winter of 2022 I was unhappily working at a dull but decently compensated...

https://www.astralcodexten.com/p/sources-say-bay-area-house-party [previously in series: 1 , 2 , 3 , 4 , 5 , 6 , 7 ] Something is off about this Bay Area House Party. There are . . . women. "I've never seen a gender balance like this in the Bay Area," you tell your host Chris. "Is this one of those fabled ratio parties?" "No - have you heard of curtfishing ? It's the new male dating trend. You say...

[This is one of the finalists in the 2025 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] 1. The Internet That Would Be In July 1945, Vannevar Bush was riding high. As Director of the Office of...

Someone argues that Donald Trump threatens democracy, maybe because he's asserting authority against the judiciary or the media or the NGOs. Someone else counterargues that it hardly seems undemocratic for someone to favor someone who won an election (the President) over other people who did not (the judiciary, the media). If anything, it seems undemocratic to allow the unelected people to continu...