Astral Codex Ten Podcast

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....

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...

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 scan...

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...

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 t...

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. Timelines 1 Define AGI as AI intelligent enough to do 90% of knowledge work jobs. I think there's a 25% chance of AGI by 2027 2 , a 50% chance by 2034, and a 75% chance by 2045. Basic argument: In...

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...

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...

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...

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...

"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...

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 reade...

(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 sh...

  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: Sens...

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...

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...

[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

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...

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...

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,...

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...

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 educatio...

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...

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...

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...