来自《耶鲁大学开放课程：金融理论 第5集 第5集》

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  from future consumption.
  降低了物品的未来的效用
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  So let's say U^
  我们在来看
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  So B is more patient than A is.
  显然人B比人A 更耐心
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  B actually doesn't discount the future.
  事物对于B的远期效用没有打折扣
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  A does discount the future.
  但是A的远期效用减少了
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  So A is impatient, relatively impatient, and B is patient.
  所以A相对的没有耐心而B较有耐心
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  They have endowments, so E^ let's say the
  他们有一个赋值
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  But now Fisher wants to talk about finance and he wants to
  费雪要讨论金融
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  talk about stocks, and bonds, and interest and all
  要研究股市 债券 利息率等等
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  kinds of things.
  这类金融工具
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  So he says, "We've talked about good with no problem.
  他说"谈我们弄清楚了物品之间的关系
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  We can talk about goods today and next year with no problem,
  弄清楚了不同时间事物的联系