Scott Alexander examines recent studies on the Fraternal Birth Order Effect, finding evidence for a broader sibling birth order effect on homosexuality, though its exact nature and mechanism remain debated.

Scott Alexander rebuts Bryan Caplan's arguments about mental illness, criticizing the preference/constraint dichotomy and providing counterarguments to Caplan's claims.

Scott Alexander argues that a purely biological, apolitical taxonomy of mental disorders is impossible due to ethical and practical considerations that inevitably influence classifications.

Scott Alexander examines the hypothesis that sexual purity taboos evolved to prevent STI spread, considering historical STI prevalence and cross-cultural taboos.

Scott Alexander examines how the 'typical mind fallacy' might lead some closeted gay individuals to support anti-gay positions, potentially influencing broader anti-gay arguments.

Scott examines the concept of political tolerance, questioning where and why society draws the line between acceptable and unacceptable political views.

Scott explains Robert Trivers' evolutionary theory that consciousness evolved as a 'public relations agency' to help people deceive others by first deceiving themselves about their true motives.