Timothy welcomes back Emily Willingham, a penis scientist who has shifted her focus to study the brain - and she has a new book called 'The Tailored Brain: From Ketamine, to Keto, to Companionship, A User's Guide to Feeling Better and Thinking Smarter'.

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Timothy interviews penis researcher and author of "Phallacy, Life Lessons from the Animal Penis”. Together, they explore how our understanding of genitalia has influenced gender inequality. They also discuss what we can learn from the ongoing studies of both the vagina and the penis about just how similar we are, and what we should be focused on if we hope to achieve gender equality.

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