来自《耶鲁大学开放课程：博弈论 第18集 第18集》

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  of Nash equilibrium from the first half of the class,
  纳什均衡
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  and we want to be able to use the idea
  也希望能使用
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  of backward induction from the second half of the class.
  期中后讲的逆向归纳
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  But what we're learning here is that Nash equilibrium,
  但是这里我们发现纳什均衡
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  if we just take the notion of Nash equilibrium
  如果我们还用纳什均衡这个概念
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  and plunk it down on these sequential move games,
  运用在序贯博弈中
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  it will produce equilibria
  会产生一些
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  that don't make any sense.
  毫无意义的均衡
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  So we need a more refined notion of equilibrium,
  所以我们需要改进均衡的定义
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  a better notion of equilibrium
  一个更好的均衡的定义
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  than just Nash equilibrium to deal with these settings
  使得纳什均衡能适用于
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  where we have both simultaneity and sequential moves.
  序贯博弈和同步竞价博弈的不同条件下