The "Rationalist Community" is a group of individuals who prioritize reason, evidence, and critical thinking in their beliefs and decision-making processes. They often engage in discussions about topics like science, philosophy, and effective altruism, aiming to improve understanding and promote rational discourse. This community is often associated with online platforms, particularly the LessWrong forum, where members share ideas and strategies for better thinking. They emphasize the importance of cognitive biases and logical fallacies, encouraging members to refine their reasoning skills and apply them to real-world problems.