Prisoner’s dilemmas ponder what happens when two rational agents, unable to communicate with one another, must choose between betraying the other for a large individual reward or cooperating for a more modest shared reward. These thought experiments are accompanied by a caveat – if both agents betray one another, they’re left with nothing. One of the best-known examples of game theory, the implications of prisoner’s dilemmas are more than just theoretical, extending to real-life matters of government and diplomacy. Illustrated with whimsical felt stop-motion, this TED-Ed animation puzzles through two prisoner’s-dilemma scenarios in which gingerbread men are forced to chew over how to keep the maximum number of limbs.
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Ecology and environmental sciences
GPS tracking reveals stunning insights into the patterns of migratory birds
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Human rights and justice
Can providing humanitarian aid be illegal? A troubling case from the US-Mexico border
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Space exploration
The rarely told story of the fruit flies, primates and canines that preceded us in space
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Film and visual culture
A lush animated opus evokes the frenzied pace of modern life
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Family life
The precious family keepsakes that hold meaning for generations
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Neuroscience
This intricate map of a fruit fly brain could signal a revolution in neuroscience
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Archaeology
What did the first people who entered Tutankhamun’s tomb see?
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Information and communication
Coverage of the ‘balloon boy’ hoax forms a withering indictment of for-profit news
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Childhood and adolescence
Marmar is living through a devastating war – but she’d rather tell you about her new dress
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