E.g., see the following, from one of the top rationality celebs, who suggests that the rationality community should run Twitter and suggests as CEO someone they praise for having great epistemic hygiene.

The praised person is the programmer who wrote the most technically ignorant/overconfident take on Twitter infra I saw: https://mastodon.social/@danluu/109374630690202023.

(BTW, not a cherry picked example in any dim. The #2 worst take was from another rationality person, person above is generally overconfident, etc.)

https://files.mastodon.social/media_attachments/files/111/161/416/992/184/846/original/548fb35af19d788a.png

https://files.mastodon.social/media_attachments/files/111/161/417/280/084/093/original/5ecdf852bba6f248.png

https://files.mastodon.social/media_attachments/files/111/161/431/401/208/898/original/2955765f65b93182.png 

 @ed709062 I was lucky to be raised in a non-religious/atheist community and retroactively lucky to have first-hand perspective on the toxicity of such communities. The Hitchens, Dawkins, and Rationalist communities all set off similar alarms. I haven't cared enough about the communities to dig deep and figure out a cause. 

 @269a2baa Yeah, when I was younger, I noticed this about the capital-A Atheist community as well as the objectivist community.

There's something about communities that are really "about" doing superior reasoning (as opposed to communities where good reasoning is important or instrumental, but aren't "about" that) that seems to cause something bad to happen. I wonder if Mensa is like this, but I haven't had enough contact with admitted Mensa folks to know. 

 @ed709062 @269a2baa The four-episode podcast "My Year in Mensa" suggests this is very strongly the case. https://podcasts.apple.com/us/podcast/my-year-in-mensa/id1492147103