来自《耶鲁大学开放课程：博弈论 第5集 第5集》

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  In the case of down right,
  在刚才的右下的情况里
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  Player 1 thinks it's okay to play down
  参与人1认为选下是很合理的
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  because he thinks 2 is going to play right,
  因为他认为参与人2会选右
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  and Player 2 thinks they're going to play right
  而参与人2认为选右是很合理的
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  because he thinks Player 1's going to play down.
  因为他认为参与人1会选下
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  So, just to underline what i'm saying rather messily there,
  我可能讲的有点乱了
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  rationality and those kinds of arguments should not
  强调一下 我们不能想当然得
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  lead us to the conclusion that people necessarily play Nash Equilibrium.
  理性地认为人们总会达成纳什均衡
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  We need a little bit more; we need a little bit more than that.
  达成纳什均衡还需要别的条件
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  Nevertheless, we are going to focus on Nash Equilibrium in the course.
  诚然 这一讲我们要来研究纳什均衡
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  Let's have a look at another example.
  我们不妨再来看一个案例
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  Again, we'll keep it simple for now and
  同样 为了便于分析研究