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August 19, 2025 6 mins

We like to think humans are naturally good… or naturally selfish. But Jonathan R. Goodman’s Invisible Rivals shows we’re both — strategic cooperators who share when it benefits us, and compete when it doesn’t. In this video, we’ll explore why we evolved to be part-altruist, part-opportunist, how culture shapes our generosity, and why designing a fair society means rewarding cooperation while making exploitation expensive. Expect vampire bats, chimps hiding bananas, and a few uncomfortable truths about your own behavior.

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