Astral Codex Ten
Scott Alexander, SkylerP(A|B) = [P(A)*P(B|A)]/P(B), all the rest is commentary.
| Platform |  | Pricing | Freemium | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 1483 | Founded | 6 years ago | Last Issue | 5 days ago |
| Active | |||||
Read this Newsletter
astralcodexten.comLatest Issues
Open Thread 453
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...
Your Book Review: Lee Kuan Yew's Memoirs
[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...
Fall Meetups 2026 - Call For Meetup Organizers
Didn’t we just do this? No, that was college effective altruist group meetups. These are the normal meetups for ineffective selfish people of all ages. So here is your regularly-scheduled message from Meetups Czar Skyler:
Short version! If...
The Specter Of Neuralese
I. At Long Last, We Have Created Neuralese Recurrence, From The Classic Sci-Fi Novel “Don’t Create Neuralese Recurrence”
In the public debates after the release of AI 2027, some people accused us of misleading readers by positing “neu...
Does Georgism Work? Five Years Later
Hi, this is Lars Doucet, author of the book review of Henry George’s Progress and Poverty that won the first ACX book review contest, as well as the three-part follow-up guest post series, “Does Georgism Work?” A lot has happened since then...
Key Facts
Audience Metrics
Subscribers, engagement, traffic and sponsorship for Astral Codex Ten.
| Subscribers | Engagement | 94 | Monthly Web Visits | ||
|---|---|---|---|---|---|
| Accepts Sponsors | Estimated Cost per Ad | ||||
SEO Reach
Where Astral Codex Ten ranks on Google, and how much search traffic it brings in.
| Ranked Keywords | 5.7k | Monthly Search Traffic | Top Keywords |
|---|
Chart Rankings
How this newsletter ranks in the official Substack charts.
| #4 | |
| #3 |
Authors
The writers behind this newsletter.
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.
Frequently Asked Questions
How can I access the email archive for Astral Codex Ten?
You can find recent issues that have been published by Astral Codex Ten on Reletter by scrolling up to where it says Latest Issues. Tap on the link for any of the most recent emails or hit More Issues to see older ones.
How many subscribers does Astral Codex Ten have?
To see how many people subscribe to Astral Codex Ten, simply upgrade your Reletter account. We provide readership numbers and lots of other stats for this newsletter so you can decide if it's worth reaching out to.
How can I advertise in Astral Codex Ten?
Newsletter advertising can be extremely effective when it's done right. Before you pitch Astral Codex Ten as a potential sponsor or partner, make sure that you've done your research and checked its newsletter stats with Reletter.
Then, personalize one of our winning pitching templates and send it to the right person using the contact info provided.
How much does it cost to sponsor a publication like Astral Codex Ten?
Newsletter ad rates (or CPM) vary depending on many factors, including industry, number of subscribers, open rate, ad placement and more.
To find out how much an ad will cost, contact Astral Codex Ten using the contact information provided and ask for a copy of their media kit.
How can I find newsletters related to Astral Codex Ten?
Scroll up to where it says Related Newsletters to see other publications like Astral Codex Ten. You can also search our email newsletter directory to discover other newsletters that cover the topics you're interested in.
How do I contact Astral Codex Ten?
Reletter provides this newsletter's website URL above, where you will often find their contact information. We also provide links to associated social media accounts and pitching templates so you can reach out fast.