来自《耶鲁大学开放课程：博弈论 第9集 第9集》

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  Let's try and see why.
  下面我来说说原因
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  So let's look at Venus' payoffs, venus' payoffs against Q.
  下面我们看看维纳斯面对Q的收益
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  So if Serena is choosing (Q,1-Q) ,
  如果塞丽娜选择(Q,1-Q)
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  what are Venus' payoffs?
  那么维纳斯的收益是多少
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  So if she chooses left then her payoff is 50 with probability Q,
  如果她选择左那么收益就是50×Q
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  and I'm going to use the pointer here,
  看来我得用教鞭了
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  and hope that the camera can see this too.
  希望看视频的同学也能看得到
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  She gets 50 with probability Q
  她有Q的概率获得收益50
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  and she gets 80 with probability 1-Q.
  和1-Q的概率获得收益80
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  If she chooses right
  如果她选择了右
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  then she gets 90 with probability Q, 90 with probability Q
  那么她有Q的概率获得收益90
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  and she gets 20 with probability of 1-Q.
  和1-Q的概率获得收益20