Why cooperation survives when selfishness should win
New research suggests that cooperation can emerge spontaneously in evolutionary systems, challenging the long-held belief that selfishness is always the dominant strategy. The study indicates that individuals responding differently to various opponents is sufficient to sustain cooperative behavior.
Why it matters
This finding provides a new mathematical foundation for understanding social behavior and evolutionary biology, potentially overturning decades of conventional theory.
Even in the Prisoner’s Dilemma, the classic thought experiment built to prove selfishness always wins, cooperation keeps showing up and sticking around.
A new study suggests this isn’t a fluke, and it might mean scientists have had the story of cooperation’s evolution backwards for a long time.
The work was led by Alexander Feigel from the Hebrew University of Jerusalem and Alexandre V. Morozov from Rutgers University .
The research offers a genuinely fresh answer to a question that’s nagged at biologists for decades: how does cooperation manage to survive at all in a world where natural selection is supposed to reward selfishness above everything else?
In the classic setup, the “smart” move in a Prisoner’s Dilemma is always to defect, even though both players would come out ahead by cooperating instead.
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