来自《耶鲁大学开放课程：博弈论 第10集 第10集 第10集》

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  So I don't know if this 2/3, 1/3 is an accurate number for the U.S.
  我不知道2/3和1/3是不是准确数字
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  It's probably not very far off actually.
  可能差不多吧
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  For Italy I'm ashamed to say the number of people
  在意大利呢 我都有点不好意思说
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  who pay taxes is more like 40%, maybe even lower now,
  诚信的纳税人比率不到40%
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  and there are countries I think where it gets as high as 90%.
  在有些国家我估计可能会高达90%
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  I think the U.S. rate when they end up auditing
  我个人认为美国的审计检查概率
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  is a little higher than this but not much.
  应该比现在稍微提高一点点
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  So again, we're going to think of this not as randomization
  当然了 我们不是把这个问题理解成
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  but as a prediction of the proportion of American taxpayers
  随机化的问题 我们只不过是在预测
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  who are going to pay their taxes.
  美国诚信纳税人的比例罢了
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  Now, I want to use this example in the time we have left,
  下面我们就用剩下的时间
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  to actually think about a policy experiment.
  来进行一次政策实验吧