来自《耶鲁大学开放课程：博弈论 第13集 第13集》

• 
  
  we can see that the Normans are in trouble.
  就会发现诺曼底人有麻烦了
• 
  
  Why are the Normans in trouble?
  为什么诺曼底人有麻烦了
• 
  
  Because if they are attacked by the Saxons
  因为如果他们遇到萨克逊人的抵抗
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  then fighting yields 0 and running away yields 1,
  收益是0 如果逃跑收益是1
• 
  
  so they're going to run away.
  所以他们会选择逃跑
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  Conversely, if the Saxons run away then in fact,
  相反 如果萨克逊人逃跑
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  the Normans will stay and fight because
  那么诺曼底人会选择继续入侵
• 
  
  it's easy to stay and fight against people who are running away.
  因为乘胜追击可是势如破竹的
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  Even I can do that.
  这个连我都会
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  So they're going to go for 2 rather than 1.
  所以他们会选择收益2而不是1
• 
  
  But now the Saxons face this choice,
  现在轮到萨克逊人面对这些选择了
• 
  
  they know that if they attack the Normans
  他们知道如果选择抵抗诺曼底入侵者