Game theory
Economic vs evolutionary game theory
- Economic games are zero-sum, i.e. increasing the payoff to one player decreases the payoff to others. Evolutionary games need not be zero-sum.
- Economic games use money as currency, evolutionary games use fitness.
Game solution is the best strategy
- Social scientists require rational behavior, evolution requires natural selection
- A pair of strategies which represent the best replies to each alternative is a Nash equilibrium.