
Patriarchy, Pay Gaps, and Sexual Selection: The Evidence vs. The Narrative (Ep. 271)
About this episode
Tonight I sat down with Dr. Mark Defant, a geologist and geochemist whose work on volcanoes and continental crust formation led him into a broader public conversation about science, ideology, gender, and how culture can distort evidence.
We covered his fieldwork from Kamchatka to Central America, why adakites matter to understanding early continental crust, and the pitfalls of centrally planned systems he witnessed in the late Soviet Union. From there, we dug into evolutionary psychology: sexual selection, why men and women tend to want different things in mates, how “patriarchy” can be understood through evolutionary pressures, the pay gap as a story of preferences and trade-offs, and why slogans like “health at any size” conflict with medical evidence. We also talked about the state of academia, DEI policy swings, free speech, and why open inquiry matters more than ever.
I closed with a reminder that science isn’t about pleasing narratives—it’s about testing ideas against data, even when conclusions are uncomfortable. Stay curious, examine claims, and don’t be afraid to ask hard questions; that’s how knowledge moves forward. If you enjoyed this one, share it, leave a comment, and let us know what you want us to cover next.
Resources mentioned: Dr. Defant’s site (markdefant.com), his recent Skeptic magazine piece on interstellar objects, his book “Voyage of Discovery,” evolutionary psychology literature on sexual and natural selection, and classic Twilight Zone episodes referenced (“The Obsolete Man”).
Guest: Dr. Marc J. Defant
https://www.marcdefant.com
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Executive Producer Rosanna Rankin
Executive Producer Carolina Jimenez
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Executive Producer John Seeley
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(00:00:37) Cold open and on-time streak at Asylum Studios
(00:02:04) Recap of last episode with Randy Lee and audience shoutouts
(00:03:16) Tonights theme: Where science ends and ideology begins
(00:04:14) Housekeeping, contact info, show schedule, and engagement push
(00:06:54) Guest intro: Dr. Mark Defant on geology, science, and culture wars
(00:08:37) Icebreakers: Time-stopping and Twilight Zone reflections
(00:11:30) Coffee talk: Beans, roasting, and French press geekery
(00:14:31) Origin story: From Journey to the Center of the Earth to volcanology
(00:22:58) Research focus: Adakites, continental crust, and a comet hypothesis
(00:25:07) Fieldwork in the Soviet Union and a first-hand look at communism
(00:28:58) From policy to daily life: Central planning, lines, and control
(00:33:09) Marxism in academia and the long march through universities
(00:38:48) Capitalism vs. communism through evolutionary lenses
(00:39:56) Pivot to evolutionary psychology and teaching human behavior
(00:45:38) Big brains, helpless infants, and division of roles in evolution
(00:49:42) Mate choice: Resources, attractiveness, and hunter-gatherer logic
(00:56:03) Modern dating, expectations, and men opting out
(01:02:48) Health at any size and scientific critiques of obesity claims
(01:06:57) Patriarchy examined: Evolutionary roots vs. ideological claims
(01:15:54) Campus culture, DEI debates, and due process concerns
(01:21:44) Policy whiplash: Executive orders, Title IX letters, and stability
(01:21:53) Ending on inspirations: Darwin, sexual selection, and Twain nod
(01:23:48) Where to find Mark Defant and closing reflections on science and debate
(01:27:36) Hosts value-for-value model and final sign-off
- Wayne Rankin
- Rosanna Rankin
- Carolina Jimenez
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