Last Time…
War/cooperation is outcome of interdependent decision
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What you do depends on what you think the other guy will do
Importance of resolve/reputation
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Maintaining resolve to ensure peace can be costly
Today: some games to figure this out
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Chicken and Prisoner’s Dilemma
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Leads to security dilemma and, if time, offense/defense
Strategic and Suboptimal
Two characteristics of a game
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Strategic: decisions based on other’s decisions/expectation of other’s decisions
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Suboptimal: sometimes both sides don’t get what they want, in order to prevent the other
side gaining advantage
o
B and R build railway
The Game of Chicken
Ex. A and B drive cars at each other. First gto swerve (cooperate) is the chicken. One who keeps
going (defects) wins the girl
Is there a dominant strategy?
cooperate
Why does this matter?
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Importance of reputation
o
If the other guy thinks you will swerve, you will always lose
o
If you don’t swerve, you crash
How to Play Chick
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- Spring '09
- Sens,Allen
- Game Theory, Suboptimal
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