来自《耶鲁大学开放课程：博弈论 第19集 第19集》

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  And what we've done is: number 3 is eliminated
  而且我们已经很清楚了
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  because it induces play in this sub-game that is not Nash equilibrium,
  第三个选项已经被我们排除了
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  not a Nash equilibrium in the sub-game.
  因为它在子博弈中不能达成纳什均衡
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  We're really putting stuff together now:
  我们现在把所学的知识联系起来
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  to be able to draw this conclusion,
  为了得出这个结论
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  we really used the fact that strategy 3 contained a redundant instruction,
  我们用到了策略3包含多余指令这一事实
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  an instruction down at this node that was never reached.
  在这一节点选下是绝对不行的
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  But that helped us get rid of it.
  但是这却能帮助我们排除掉它
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  So that one's gone: 3 is gone.
  于是我们就把策略3排除了
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  Let's proceed.
  我们继续
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  I'm going to run out of board space here.
  这块黑板快用完了
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  Have people got this one down?
  大家都记下来了吗