Most everything that is taught about the prisoner's relies on the strategies for single event games. More emphasis should be placed on Robert Axelrod's work on iterative games. In iterative games (which are more like life than single games) cooperative stragies dominate selfish strategies. Richard Dawkins (The Selfish Gene), Robert Wright (Nonzero), and Matt Ridley (The Origins of Virtue) have all written on the roles that cooperation and reputation play in human interaction.
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