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Astral Codex Ten

Scott Alexander

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

Platform
Substack
PricingFreemiumPublishesDaily
Issues1455Founded6 years agoLast Issue5 days ago
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Latest Issues

Why I'm Staying Out Of The Substack Religion Debate

I.

Matthew Adelstein (aka Bentham’s Bulldog) and Richard Chappell debate the existence of God. So do JP Andrew, Benjamin Tettu, Sangwon Lee, Ethan Muse, other Ethan, and “Atheistic Journals”, all within this month! I thought the omnipresen...

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Open Thread 447

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. Most content is free, some is subscr...

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Your Book Review: The Escape Artist

[This is one of the finalists in the 2026 book 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...

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The Foothills Of Bay Area House Party

[previously in series: 1, 2, 3, 4, 5, 6, 7, 8, 9]

Paul Graham once said that every city sends a message. New York says you should make more money. Berkeley says you should live better. Boston says you should be smarter. People shouldn’t de...

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The Quest For Caffeine You Can Have At Night

Since the beginning of time, mankind has yearned to drink a cup of coffee at 5 PM and go to sleep at 10. But now there’s an entire scientific subfield and several companies pandering to this absurd fantasy.

Here’s a simplified diagram of c...

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