1. What are a couple of general strategies for resolving the Prisoner's dilemma (that is, for achieving cooperation)?
2. Why might tit-for-tat be a good strategy? Why might it be a poor one?
3. In general, what is a "tragedy of the commons"?
4. How does a game tree differ from a decision tree?
5. This chapter provides several examples of coordination games. Here is another: You and another person separately (and privately, with no communication) pick an integer between (and including) 1 and 10. If you pick the same number, you both win a prize. If you pick different numbers, you win nothing. How many Nash equilibria are there in this game, and what are they?