来自《耶鲁大学开放课程：博弈论 第11集 第11集》

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  each of whom is playing a particular strategy,
  每个个体都有特定的策略
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  and we're going to assume that what happens is,
  接下来我们假设
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  we randomly pick two people from that population and pair them up.
  我们随机抽取两个个体给他们配对
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  So everyone in this large population
  这就意味着这个巨大的总群中
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  will be randomly paired with someone else,
  每一个个体都会被随机配对
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  they'll play the strategy that they are hardwired to play,
  而且它们采取的策略都是天生的
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  and then we'll see what happens.
  然后我们看看会发生什么
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  So the idea here is there's a large population of, if you like animals,
  我们假设有一个很大的动物种群
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  which are hardwired to play particular strategies,
  每一个个体都采取与生俱来的策略
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  and we're going to have random matching.
  然后我们给它们进行随机配对
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  The idea here is when we do lots of these random matching,
  而且在我们做大量的随机配对时
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  we're going to keep track of the average payoffs.
  我们还要记录一下平均收益