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PODCAST

Astral Codex Ten Podcast

The official audio version of Astral Codex Ten, with an archive of posts from Slate Star Codex. It"s just me reading Scott Alexander"s blog posts.

technology

All Episodes

50:11

Your Review: Project Xanadu - The Internet That Might...

Astral Codex Ten Podcast ·

2025/09/26

[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 Scientific Research and Development, he’d won World War II. His proximity fuse intercepted hundreds of

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08:44

Defining Defending Democracy: Contra The Election...

Astral Codex Ten Podcast ·

2025/09/26

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 continue to obstruct and harass elected leaders. The most common response is to say that fine, democracy is

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01:05:33

Your Review: The Synaptic Plasticity and Memory...

Astral Codex Ten Podcast ·

2025/09/24

[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] I. THE TASTE OF VICTORY The Tupinambá people ate their enemies. This fact scared Hans Staden, a German explorer who was captured by Tupinambá warriors in 1554, when they caught him by surprise during a

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42:20

Book Review: If Anyone Builds It, Everyone Dies

Astral Codex Ten Podcast ·

2025/09/12

I. Eliezer Yudkowsky’s Machine Intelligence Research Institute is the original AI safety org. But the original isn’t always the best - how is Mesopotamia doing these days? As money, brainpower, and prestige pour into the field, MIRI remains what it always was - a group of loosely-organized weird people, one of whom cannot be convinced to stop wearing a sparkly top hat in public. So when I was doing AI grantmaking last year, I asked them - why should I fund you instead of the guys with the army of

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44:23

Links For September 2025

Astral Codex Ten Podcast ·

2025/09/10

[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-september-2025

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25:04

Your Review: Participation in Phase I Clinical...

Astral Codex Ten Podcast ·

2025/09/10

[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] If you’ve been following this blog for long, you probably know at least a bit about pharmaceutical research. You might know a bit about the sort of subtle measures pharmaceutical companies take to influence

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15:23

What Is Man, That Thou Art Mindful Of Him?

Astral Codex Ten Podcast ·

2025/09/10

"You made him lower than the angels for a short time..." God: …and the math results we’re seeing are nothing short of incredible. This Terry Tao guy - Iblis: Let me stop you right there. I agree humans can, in controlled situations, provide correct answers to math problems. I deny that they truly understand math. I had a conversation with one of the humans recently, which I’ll bring up here for the viewers … give me one moment …

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05:17

Open Letter To The NIH

Astral Codex Ten Podcast ·

2025/09/02

You can sign the letter here. The Trump administration has been retaliating against its critics, and people and groups with business before the administration have started laundering criticism through other sources with less need for goodwill. So I have been asked to share an open letter, which needs signatures from scientists, doctors, and healthcare professionals. The authors tell me (THIS IS NOT THE CONTENTS OF THE LETTER, IT’S THEIR EXPLANATION, TO ME, OF WHAT THE LETTER IS FOR): The NIH

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25:27

In Search Of AI Psychosis

Astral Codex Ten Podcast ·

2025/09/02

AI psychosis (NYT, PsychologyToday) is an apparent phenomenon where people go crazy after talking to chatbots too much. There are some high-profile anecdotes, but still many unanswered questions. For example, how common is it really? Are the chatbots really driving people crazy, or just catching the attention of people who were crazy already? Isn’t psychosis supposed to be a biological disease? Wouldn’t that make chatbot-induced psychosis the same kind of category error as chatbot-induced diabetes

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32:18

Your Review: Ollantay

Astral Codex Ten Podcast ·

2025/08/24

Finalist #9 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] Ollantay is a three-act play written in Quechua, an indigenous language of the South American Andes. It was first performed in Peru around 1775. Since the mid-1800s it’s

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18:47

My Responses To Three Concerns From The Embryo...

Astral Codex Ten Podcast ·

2025/08/24

[original post here] #1: Isn’t it possible that embryos are alive, or have personhood, or are moral patients? Most IVF involves getting many embryos, then throwing out the ones that the couple doesn’t need to implant. If destroying embryos were wrong, then IVF would be unethical - and embryo selection, which might encourage more people to do IVF, or to maximize the number of embryos they get from IVF, would be extra unethical. I think a default position would be that if you believe humans are more

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01:26:10

Your Review: Dating Men In The Bay Area

Astral Codex Ten Podcast ·

2025/08/24

Finalist #8 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] I. The Men Are Not Alright Sometimes I’m convinced there’s a note taped to my back that says, “PLEASE SPILL YOUR SOUL UPON THIS WOMAN.” I am not a therapist, nor in any way

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34:37

In Defense Of The Amyloid Hypothesis

Astral Codex Ten Podcast ·

2025/08/20

A guest post by David Schneider-Joseph The “amyloid hypothesis” says that Alzheimer’s is caused by accumulation of the peptide amyloid-β. It’s the leading model in academia, but a favorite target for science journalists, contrarian bloggers, and neuroscience public intellectuals, who point out problems like: Some of the research establishing amyloid's role turned out to be fraudulent. The level of amyloid in the brain doesn’t correlate very well with the level of cognitive impairment across

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27:03

Highlights From The Comments On Liberalism And...

Astral Codex Ten Podcast ·

2025/08/15

[Original post: Should Strong Gods Bet On GDP?] 1: Comments About The Theory 2: Comments About Specific Communities 3: Other Comments Comments About The Theory Darwin writes: I think you may (*may*, I'm not sure) be vastly underestimating how many people are in some form of nontraditional tight-knit community. Notice that many of the communities you list are things you've directly personally encountered through your online interests or social circle. Most people have never heard of libertarian

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29:36

Your Review: My Father’s Instant Mashed Potatoes

Astral Codex Ten Podcast ·

2025/08/15

[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] My dad only actually enjoys about ten foods, nine of them beige. His bread? White. His pizza? Cheese. His meat? Turkey breast. And his side dish? Mashed potatoes. As a child I hated mashed potatoes, despite

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09:47

Should Strong Gods Bet On GDP?

Astral Codex Ten Podcast ·

2025/08/15

Slightly contra Fukuyama on liberal communities Francis Fukuyama is on Substack; last month he wrote Liberalism Needs Community. As always, read the whole thing and don’t trust my summary, but the key point is: R. R. Reno, editor of the magazine First Things, the liberal project of the past three generations has sought to weaken the “strong Gods” of populism, nationalism, and religion that were held to be the drivers of the bloody conflicts of the early 20th century. Those gods are now returning,

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02:18:10

Your Review: Joan of Arc

Astral Codex Ten Podcast ·

2025/08/07

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

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59:29

Suddenly, Trait-Based Embryo Selection

Astral Codex Ten Podcast ·

2025/08/05

[see footnote 4 for conflicts of interest] In 2021, Genomic Prediction announced the first polygenically selected baby. 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 fibrosis1. The final step was polygenic selection

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10:45

My Heart Of Hearts

Astral Codex Ten Podcast ·

2025/08/03

I promised some people longer responses: Thomas Cotter asks 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

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01:04:22

Your Review: The Astral Codex Ten Commentariat (“Why...

Astral Codex Ten Podcast ·

2025/08/03

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

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1,097 results

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