AI Summary
5 min readThe mathematician George Price derived an equation that seemed to prove that true selflessness could not exist in nature. He then spent the rest of his life trying to disprove his own math. This Radiolab episode, originally from 2010, uses Price’s story as a hinge to explore a central question: if evolution is driven by selfish survival, where does genuine generosity come from—and can it ever be real?
The equation that proved altruism was selfish
Price was a brilliant, restless man who bounced from the Manhattan Project to Bell Labs to cancer research, always chasing a single great discovery. In 1967, he landed on a question: why do families exist? Why would any creature help another, especially at a cost to itself? Darwin himself called altruism the greatest riddle for his theory of natural selection.
Price derived an equation—the Price equation—that showed mathematically how altruistic behavior could evolve. The key insight was that helping a close relative (who shares many of your genes) is, from a gene's-eye view, a form of self-preservation. Saving a sibling, who shares 50% of your genes, is mathematically equivalent to saving half of yourself. The instinct to help family is selfishness in disguise.
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What you'll learn
- 1 (01:56) **Episode Introduction** - Hosts Lulu Miller and Latif Nasser reintroduce a 2010 episode asking why we help others even when it hurts us.
- 2 (02:50) **The Problem of Goodness in a Cruel World** - Hosts Jad Abumrad and Robert Krulwich frame the episode by quoting Richard Dawkins on the suffering inherent in nature.
- 3 (06:44) **George Price: A Life of Selfishness** - Introduction to mathematician George Price, a brilliant but selfish man who abandoned his family.
- 4 (11:05) **The Evolutionary Riddle of Altruism** - Price's question expands to why any creature helps another, a mystery that troubled Darwin.
- 5 (16:16) **Price's Equation and Its Dark Implication** - George Price writes an equation proving altruism can evolve, but concludes it is always "selfishness in disguise."
- 6 (19:06) **Price's Radical Experiment in Selflessness** - To disprove his own math, Price embarks on a program of radical altruism, giving everything to London's homeless.
- 7 (27:53) **The Carnegie Hero Fund: Defining Heroism** - The show shifts to examine real acts of bravery, starting with the Carnegie Hero Fund's definition of a hero.
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Show Notes
The standard view of evolution is that living things are shaped by cold-hearted competition. And there is no doubt that today's plants and animals carry the genetic legacy of ancestors who fought fiercely to survive and reproduce. But in this hour that we first broadcast back in 2010, we wonder whether there might also be a logic behind sharing, niceness, kindness ... or even, self-sacrifice. Is altruism an aberration, or just an elaborate guise for sneaky self-interest? Do we really live in a selfish, dog-eat-dog world? Or has evolution carved out a hidden code that rewards genuine cooperation?
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