Your Review: Joan of Arc
Astral Codex Ten Podcast
Finalist #6 in the Review Contest [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] When the prefect of Alexandria’s daughter converted to Christianity, nothing in particular happened - it wasn’t as though the laws outlawing the cult would be enforced against her. She was smart, she was pretty (beautiful, even) and she had connections. So...
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Suddenly, Trait-Based Embryo Selection
Astral Codex Ten Podcast
[see footnote 4 for conflicts of interest] In 2021, announced . When a couple uses IVF, they may get as many as ten embryos. If they only want one child, which one do they implant? In the early days, doctors would just eyeball them and choose whichever looked healthiest. Later, they started testing for some of the most severe and easiest-to-detect genetic disorders like Down Syndrome and cystic fibrosis. The final step was polygenic selection - genotyping each embryo and implanting the one with the best genes overall. Best in what sense? Genomic Prediction claimed the ability to forecast...
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My Heart Of Hearts
Astral Codex Ten Podcast
I promised some people longer responses: why people think “consistency” is an important moral value. After all, he says, the Nazis and Soviets were “consistent” with their evil beliefs. I’m not so sure of his examples - the Soviets massacred workers striking for better conditions, and the Nazis were so bad at race science that they banned IQ tests after Jews outscored Aryans - but I’m sure if he looked harder he could find some evil person who was superficially consistent with themselves. is suspicious that lots of people oppose the massacres in Gaza without having objected...
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Your Review: The Astral Codex Ten Commentariat (“Why Do We Suck?”)
Astral Codex Ten Podcast
Jul 26, 2025 Finalist #5 in the Review Contest [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] Introduction The Astral Codex Ten (ACX) Commentariat is defined as the 24,485 individuals other than Scott who have contributed to the corpus of work of Scott’s blog posts, chiefly by leaving comments at the bottom of those posts. It is well...
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Apply For An ACX Grant (2025)
Astral Codex Ten Podcast
We’re running another ACX Grants round! If you already know what this is and just want to apply for a grant, use (should take 15 - 30 minutes), deadline August 15. If you already know what this is and want to help as a , , , , or , click the link for the relevant form, same deadline. Otherwise see below for more information. What is ACX Grants? ACX Grants is a microgrants program that helps fund ACX readers’ charitable or scientific projects. Click the links to see the and cohorts. The program is conducted in partnership with , a charity spinoff of Manifold Markets, who handle the...
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Press Any Key For Bay Area House Party
Astral Codex Ten Podcast
[previously in series: , , , , , ] It is eerily silent in San Francisco tonight. Since Mayor Lurie's crackdown, the usual drug hawkers, catcallers, and street beggars are nowhere to be seen. Still, your luck can’t last forever, and just before you reach your destination a man with bloodshot eyes lurches towards you. You recognize him and sigh. "Go away!" you shout. "Hey man," says Mark Zuckerberg, grabbing your wrist. "You wanna come build superintelligence at Meta? I'll give you five million, all cash." "I said go away!" "Ten million plus a Lambo," he counters. "I don't even know anything...
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Your Review: Islamic Geometric Patterns In The Metropolitan Museum Of Art
Astral Codex Ten Podcast
[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]
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Book Review: Arguments About Aborigines
Astral Codex Ten Podcast
I. A thought I had throughout reading L.R. Hiatt’s was: What are anthropologists even doing? The book recounts two centuries’ worth of scholarly disputes over questions like whether aboriginal tribes had chiefs. But during those centuries, many Aborigines learned English, many Westerners learned Aboriginal languages, and representatives of each side often spent years embedded in one another’s culture. What stopped some Westerner from approaching an Aborigine, asking “So, do you have chiefs?” and resolving a hundred years of bitter academic debate? Of course the answer must be...
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Your Review: Of Mice, Mechanisms, and Dementia
Astral Codex Ten Podcast
[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] “The scientific paper is a ‘’ that creates “a totally misleading narrative of the processes of thought that go into the making of scientific discoveries.” This critique comes not from a conspiracist on the margins of science, but from Nobel laureate Sir Peter Medawar. A brilliant...
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Practically-A-Book Review: Byrnes on Trance
Astral Codex Ten Podcast
Steven Byrnes is a physicist/AI researcher/amateur neuroscientist; needless to say, he blogs on Less Wrong. I finally got around to reading . If that sounds boring, it shouldn’t: Byrnes charges head-on into some of the toughest subjects in psychology, including trance, amnesia, and multiple personalities. I found his perspective enlightening (no pun intended; meditation is another one of his topics) and thought I would share. It all centers around this picture: But first: some excruciatingly obvious philosophical preliminaries.
info_outlineThis is a reported phenomenon where if two copies of Claude talk to each other, they end up spiraling into rapturous discussion of spiritual bliss, Buddhism, and the nature of consciousness. From the system card:
Anthropic swears they didn’t do this on purpose; when they ask Claude why this keeps happening, Claude can’t explain. Needless to say, this has made lots of people freak out / speculate wildly.
I think there are already a few good partial explanations of this (especially Nostalgebraist here), but they deserve to be fleshed out and spread more fully.