How can we decide on the best strategy for playing a game? How can we determine
a game’s likely outcome? We need something to help us determine how
the rational behavior of each player will lead to an equilibrium solution. Some
strategies may be successful if competitors make certain choices but fail if they
make other choices. Other strategies, however, may be successful regardless of
what competitors do. We begin with the concept of a dominant strategy—one
that is optimal no matter what an opponent does