Canonical · Game Theory & Strategy · Book
Repeated Games & Axelrod's Tournaments
Robert Axelrod · 1984
"Axelrod invited game theorists to submit programs for iterated prisoner's dilemma and the simplest — Tit for Tat, cooperate first then copy the opponent — won, showing cooperation can evolve without central authority when the shadow of the future is long enough."
Axelrod ran a computer Olympics for prisoner's dilemmas in 1980: every submitted strategy played every other for 200 rounds. The winner was four lines long.
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