来自《耶鲁大学开放课程：金融理论 第12集 第12集》

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  Very good.
  很好
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  Any other comments?
  还有补充吗
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  All right, now how do you solve this?
  如何来解决
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  Well, let's figure out how to solve this.
  让我们来解答
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  So the first thing you could notice is that--so Fisher never
  首先我们来看
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  thought of having infinite time and never thought about Social
  费雪当初并未想过无限的时间
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  Security.
  还有社会保障
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  Maybe he thought about Social Security.
  也许有关于社保的想法
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  I'm not aware that he had any thoughts about Social Security.
  但是我没有留意
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  We didn't have Social Security so it's unlikely he had been
  那时我们还没有社保
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  thinking about it.
  他应该不会涉及这些
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  So I don't think he thought about time going on forever,
  他不认为时间是永续的