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We thought we had such problems. How were we to know we were happy?
我们以为我们有这么多问题。我们怎么知道我们是幸福的?
The power of markets comes from their ability to aggregate dispersed information.
释义:现在的贫富情况不能决定以后的穷富,将来的富裕或贫困情况还不能预知。