Sam Harris speaks with Kathryn Paige Harden about behavioral genetics, moral luck, and the problem of blame. They discuss Harden's book Original Sin, the controversy over Charles Murray and Ezra Klein, why behavioral genetics remains taboo, the meaning of heritability, nature and nurture as feedback loops, why biological explanations can increase blame, psychopathy as a continuum, a hypothetical cure for evil, embryo selection and IVF, and other topics.

Kathryn Paige Harden, Ph.D., is a Professor of Psychology at the University of Texas at Austin, where she directs the Developmental Behavior Genetics lab and serves as Director of Clinical Training. Paige is a graduate of Furman University and the University of Virginia. She has published over 150 scientific papers on the nature and nurture of human behavior. She is also the author of two books: The Genetic Lottery (2021) and Original Sin (2026).

Website: kpharden.com

X: @kph3k

Related Episode: #212 - A Conversation with Kathryn Paige Harden