LessWrong / Lightcone

LessWrong is an online community and forum dedicated to rationality, effective altruism, and AI safety discourse. Founded in 2009 by Eliezer Yudkowsky and others, it became the primary hub for discussing decision theory, existential risk, and alignment problems. The platform hosts long-form essays, research, and debate on topics ranging from cognitive biases to AI x-risk scenarios. Lightcone Infrastructure, established later, serves as the organizational backbone supporting LessWrong's operations, community events, and related projects. The forum has been instrumental in incubating key ideas in AI safety (including alignment concerns) and has hosted influential authors and researchers who shaped contemporary AI governance discourse.