来自《耶鲁大学开放课程：博弈论 第12集 第12集》

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  And it turns out that when biologists play rock,paper,scissors
  在生物学里的剪刀石头布
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  they give it a different name,
  有另一种叫法
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  they call it "scratch, bite, and trample."
  它们叫 抓咬踩
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  Scratch, bite,and trample
  抓咬和踩
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  is essentially the tactics of the Australian football team.
  是澳大利亚橄榄球队的主要战术
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  So scratch, bite, and trample are the three strategies,
  抓咬和踩是三种策略
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  and it's a little bit like rock, paper, and scissors.
  有点像剪刀石头布
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  How do we change it?
  我们怎么改变它呢
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  First, we added 1 to all the payoffs
  首先 我们给所有的收益加1
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  to make sure there are no negatives in there
  以保证收益不会出现负数
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  and second we added a little bit more than 1 to winning.
  然后我们给胜利者加的比1大一点
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  If we added 1 to everything--
  如果我们给所有的收益都加上1