David Barash, evolutionary psychologist and aging mountaineer, joins me to talk about the different ways of getting to human nature, political correctness, and sex differences.

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Special thanks to Chris Maier, who did the music. Find him here.

GUEST LINKS
Threats (Amazon)
Through A Glass Brightly (Amazon)
David's books on Goodreads
David's Aeon articles (Free!)

THINGS WE MENTIONED
Palace of Culture and Science, Warsaw
Turner syndrome (X0)
Klinefelter syndrome (XXY)
Genghis Khan's progeny
Ramesses II had a lot of children

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