The Prisoners’ Dilemma, etc.  Advice & Overview
Don’t memorize the payoffs
Do grasp the substantive problem
Ø Cooperation is valuable. . .
Ø . . . but it is hard to achieve.
What makes cooperation valuable?
Greater social benefits (aggregate payoffs) when it
occurs than when it doesn’t occur
Recent, recurring, personal examples ?
What makes cooperation hard to achieve?
The incentive to free-ride, defect, not cooperate, not
contribute. . .
] Concepts:  dominant strategy, equilibrium