来自《耶鲁大学开放课程：博弈论 第11集 第11集》

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  and Woo the ant cooperates.
  吴也是合作型的蚂蚁
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  So since they both cooperate there,
  他们两个人都选择了合作
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  we can look at what their payoff is,
  下面我们来看看他们的收益
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  their payoff is cooperate against cooperate,
  他们的收益是合作对合作
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  so they get 2, so that's pretty good,
  即各自收益为2 这很不错
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  so they're doing pretty well in terms of genetic fitness
  从基因的适应性上来说他们的选择很好
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  and suddenly there are two ants, right?
  现在一共有两只蚂蚁是吧
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  So this ant produces another ant,
  这只蚂蚁又生出来了另一只蚂蚁
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  someone without a computer,
  我找个没带电脑来的吧
• 
  
  and this ant produces another ant,
  这只蚂蚁生出来了这一只蚂蚁
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  so they're doing fine
  这种情况挺不错的
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  and the whole population is matching against other cooperative ants,
  整个种群中合作型的蚂蚁互相配对