来自《耶鲁大学开放课程：博弈论 第21集 第21集》

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  then the game will end
  那么博弈就结束了
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  but otherwise they'll play again.
  如果不是的话博弈继续
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  So everyone understand what we're going to do?
  大家都明白我们要做什么了吗
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  We're going to play Prisoner's Dilemma.
  我们要进行一次囚徒困境的博弈
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  At the end of every period I'll toss a coin twice.
  在每一次博弈阶段结束时我会抛两次硬币
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  I might get Jake to toss it. Jake will toss a coin twice.
  我可以会让杰克来抛 杰克会抛两次硬币
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  If it comes up heads both times the game's over
  如果两次结果都是头像朝上 博弈结束
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  but otherwise the game continues.
  如果不是的话博弈继续
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  So both Brooke and Patrick should get ready to play,
  那么布鲁克和帕特里克准备好开始了
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  and the payoffs of this game are just what we had before.
  这个博弈的收益和我们之前的那个一样
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  So let's just remind ourselves what the payoffs of that game are.
  我们先来回忆一下之前博弈的收益
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  So we've got cooperate, defect, cooperate, defect,
  策略有(合作,背叛) (合作,背叛)