来自《耶鲁大学开放课程：金融理论 第4集 第4集》

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  So if you want to maximize the sum of utilities you have to
  如果要最大化你的效用总和就必须最大化
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  such that X^a+X^b =84
  这样的X^a+X^b等于84
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  which is the sum of 4 and 80
  也就是4和80的和
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  and Y^ Y^ = 6,000.
  所以Y^a+Y^b=6000
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  So the claim is that if all these two million people meet in
  结论就是如果这两拨人像这样相见
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  a room like this and start shouting at each other,
  并开始对着对方大叫
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  and trading and offering deals and stuff,
  贸易和提供交易和货物
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  it's going to come down to a final allocation which we've
  最终会得到一个最终的分配
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  written over there were A gets 77 of the first good and B gets
  即A得到77的第一种货物
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  7 of the first good, and that final allocation is
  B得到了7的第一种货物
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  going to maximize the sum of utilities.
  并且最终分配将会最大化效用的总和
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  So why should that be the case?
  为什么这个很重要呢