The idea was to think of a strategy that is the best you can do, given your belief about what the other people are doing: what your opponents are doing, what other players are doing.

在你已经对别人如何行动有一定信念时,你能想到的最佳的策略,你的对手会怎么做,其他人又会怎么做

耶鲁公开课 - 博弈论课程节选

So strategy ?i is a best response to the strategy S-i of the other players if my payoff from choosing ?i against S-i, is weakly bigger than that from choosing Si' against S- i, and this better hold for all possible other strategies I could choose.

策略?i是其他参与人策略S-i的,最佳对策,如果此时我选?i的收益,弱优于此情况下选Si'的收益,这对于所有我可以选择的策略都成立

耶鲁公开课 - 博弈论课程节选

We need not just that you're all rational players, not just that you know each other's rational, but you know everyone else's rational.

不仅需要你们都是理性的参与人,不仅需要你们知道对方是理性的,而且必须知道所有人都是理性的

耶鲁公开课 - 博弈论课程节选

The players are playing a best response to each other.

参与人们都采用了自己的最佳对策

耶鲁公开课 - 博弈论课程节选