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Payoff matrix

For the Prisoners dilemma

Here, the payoff is like a golf score--lower is better
	Cooperate	Defect
Cooperate	6 months, 6 months	no time, 10 years
Defect	10 years, no time	5 years, 5 years

For Chicken

Here, the higher the payoff, the better.
	Cooperate	Defect
Cooperate	+5, +5	+1, +10
Defect	+10, +1	-20, -20

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