Scott examines a new genetic study on missing heritability that both hereditarians and nurturists claim vindicates their position, concluding that despite the study's advances, the fundamental debate over how heritable traits like IQ actually are remains unresolved.

Scott Alexander responds to comments on his COVID-19 origins debate post, addressing criticisms and maintaining his support for the zoonosis theory.

Scott Alexander argues that schizophrenia should be described as predominantly genetic, addressing counterarguments and emphasizing the importance of this perspective for prevention strategies.

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 announces the winners of the 2019 Adversarial Collaboration Contest and reviews all entries, praising their strengths and noting their impact on readers.

Scott Alexander announces winners of the adversarial collaboration contest and shares participant feedback, while reflecting on potential issues with the format.

Scott Alexander shares links to a debate between Gary Taubes and Stephan Guyenet about the health effects of sugar, praising the high-level discussion.