Richard Wrangham is a professor at Harvard, a primatologist, and the author of multiple books including "The Goodness Paradox: The Strange Relationship Between Virtue and Violence in Human Evolution."

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(00:00) Intro

(00:50) How humans have removed alpha male bullies

(09:59) Christopher Boehm's "Hierarchy in the Forest"

(16:06) Implications of human's self-domestication through violence

(22:03) Bullying male behavior that would lead to execution

(28:45) How the threat of violence influenced our moral impulses

(34:23) Psychopathy and reactive aggression in adult men

(45:25) How can someone spot a psychopath?

(50:07) Jane Goodall and how Richard views human nature

(01:02:53) Cooking and fire

(01:03:13) Richard's views on removing the y chromosome

(01:10:39) Removing genes for extreme aggression rather than men altogether

Robert Plomin is a British-American scientist, a psychologist and behavioral geneticist, and the author of the bestselling book, "Blueprint: How DNA Makes Us Who We Are."

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(00:00) Intro

(00:53) The power of DNA in making us who we are

(03:40) Debunking the nurture-focused perspective

(10:40) Robert's views on his own genetic predisposition to weight gain

(22:59) How personalized, low-cost DNA sequencing will effect people's lives

(30:21) Clarity around genetic risk will improve with time

(31:49) The probabilistic, nuanced truth of genetic influence

(38:20) Clarifying randomness and the nurture aspect of who we are

(43:57) Identical twins

(49:36) Quotes from "Blueprint"

(58:41) A quote about child rearing from Tig Notaro

(01:02:00) How genetic truths can make people more compassionate

(01:04:52) Merging evolution and psychology

(01:15:23) How should society evolve and improve because of these truths?

(01:18:23) B.F. Skinner and the power of nature in the extremes

Brian Hare is a professor of evolutionary anthropology at Duke University and is the co-author of the book "Survival of the Friendliest: Understanding Our Origins and Rediscovering Our Common Humanity."

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(00:00) Intro

(00:46) The origin and ideas of "Survival of the Friendliest"

(07:38) The story of human survival and dominance

(20:20) What is meant by "friendliness"?

(26:40) Tribal identity and darker aspects of human cooperation

(35:15) Political polarization in America

(46:12) The work of Braver Angels and overcoming political division

(52:30) Is it ever appropriate to dehumanize?