Brighton Rationalish is a social group for people interested in things like cognitive biases (ways we might be wrong about what we know or how we think), critical thought (how we might become "less wrong" about the world), and good-faith debate (hoping to discover truth, rather than just win an argument).

It's associated with websites like Less Wrong and SlateStarCodex/AstralCodexTen, and to the Effective Altruism movement, but isn't really tied to any one thing. We get together and chat about things like AI, decision theory, ethics, prediction...

You don't have to identify as a rationalist to attend: basically, if you think we seem like interesting people you'd like to hang out with, welcome.