来自《耶鲁大学开放课程：心理学导论 第12集》

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  How many cooperated?
  有多少人举合作牌
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  How many defected?
  多少人举拒绝合作
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  Okay. How many people are now five dollars richer?
  好 现在有多少人赢得了五美元
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  Okay. How many of you got nothing?
  好 多少人一分没得到
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  Okay. So, you're learning.
  这就是吃一堑长一智
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  You're learning that the person next to you is really an SOB.
  现在你知道了旁边这位多孙子
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  Now,
  现在
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  find the person next to you and you get to play again.
  在身边找个搭档 再玩一遍
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  And you get to play five games in a row.
  一局五次
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  Play five games in a row and keep score.
  把一局的分数记录下来
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  You just show it to each other, record the numbers,
  亮答案 然后记分
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  show it, show it, show it, show it.
  亮答案 亮答案