A Frank Chat with ‘Sex at Dawn’ Coauthor Christopher Ryan

A Frank Chat with Sex at Dawn Coauthor Christopher Ryan
The Stranger

What’s it like these days to be the people who wrote the book on the science of nonmonogamy? The New York Times best seller Sex at Dawn was published four months ago, and since then, coauthors Christopher Ryan and Cacilda Jethá have received a lot of attention for their book. It’s not surprising—Ryan and Jethá have woven physiology, archaeology, primate biology, and anthropology into a controversial theory: Humans are not naturally inclined to be monogamous. People can choose to be in lifelong monogamous commitments, but long-term fidelity is difficult for Homo sapiens.

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