Rationalist community
The rationalist community is a 21st-century movement that formed around a group of internet blogs, primarily LessWrong and Astral Codex Ten (formerly known as Slate Star Codex). The movement initially gained prominence in the San Francisco Bay Area. Its members seek to use rationality to avoid cognitive biases. Common interests include probability, effective altruism, transhumanism, and mitigating existential risk from artificial general intelligence.
The borders of the rationalist community are blurry and subject to debate among the community and adjacent groups. Members who diverge from typical rationalist beliefs often self-describe as "rationalist-adjacent", "post-rationalist" (also known as "ingroup" and "TPOT", an acronym for "this part of Twitter") or "EA-adjacent".