来自《耶鲁大学开放课程：金融理论 第5集 第5集》

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  All right, because you see in this budget set,
  看这个预算集
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  thanks to that inspired question, if you double
  谢谢刚刚同学的指正
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  q_2, q_2 appears everywhere;
  这里还有两个q_2
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  you're not going to change the second equation.
  不能改变第二个方程
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  So q_2 could be anything.
  所以q_2可以等于任何数
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  You can double it or triple it, it won't matter,
  你放大几倍都没有影响
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  and the same with q_1.
  对于q_1 也是这样
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  It's just like Walras said before, you can always normalize
  就像瓦尔拉讲的
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  prices to be one.
  我们可以设其为1
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  He had to add another theory of money and how many dollars were
  需要引入其他理论
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  floating around in the economy to explain q_2.
  用经济中货币的保有量解释q_2
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  This theory won't explain it.
  费雪的理论不解释q_2