来自《耶鲁大学开放课程：博弈论 第17集 第17集》

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  the person making the offer can get everything.
  条件的提出者可以得到全部
• 
  
  So in period two, they must be getting δ times that,
  那么在第二轮 他们给出δ乘以总数
• 
  
  so in period one you have to give them at least this much.
  在第一轮 你至少要给出这么多
• 
  
  And this here is the offer you'd make in the three stage game.
  而这是你在第三轮要给出的条件
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  So in the picture we're just doing a little zigzag;
  所以在图里面看上去有点像之字形
• 
  
  on the chart we're also always working across the diagonal.
  在图表中我们总是对角线操作
• 
  
  So we've done the one stage game: the one stage game,
  我们已经分析了单期博弈
• 
  
  the person making the offer gets everything.
  单期博弈中 提出者会得到全部
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  In the two stage game, the person making the offer
  两期博弈中 条件提出者
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  offers just enough to get the offer accepted
  会给出足够的份额让对方接受
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  which is $δ because that's what $1 is worth tomorrow.
  大小就是δ美元 即明天的1美元
• 
  
  In the three stage game,
  在三期博弈中