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Astral Codex Ten

Scott Alexander, Skyler

P(A|B) = [P(A)*P(B|A)]/P(B), all the rest is commentary.


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Latest Issues

Recent posts by this newsletter. Browse the email archive.

Highlights From The Comments On The Lab Leak Debate

Original post here. Table of contents below. I want to especially highlight three things.

2 days ago

Open Thread 324

This is the weekly visible open thread. Post about anything you want, ask random questions, whatever. ACX has an unofficial subreddit, Discord, and bulletin board, and in-person meetups around the world. 95% of content is free, but for the ...

3 days ago

Explicit Honesty


6 days ago

Links For April 2024

[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 ...

7 days ago


The writers behind this newsletter.

  • Scott Alexander
  • Skyler

    I'm Skyler, AKA Screwtape. Starting early in 2023, I'm the ACX Meetups Czar. I also do the NYC Rationalist Megameetup, the Animorphs: The Reckoning podfic, and lots of RPGs.

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