The Nash Equilibrium describes the best strategy for a two-player finite game. This is the series of steps that each player should take if they want to maximize their chances of winning given that they have all the information and there are no external forces or luck. Tic Tac Toe has a Nash Equlibrium. This is the strategy of “no regrets.” If we’re to play this game, the Nash equilibrium is the best way to play it. Even if we know that we’re about to lose this round, it’s still the best way to play, each time. But most of us are not involved in two-player finite games. Instead, we encounter
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