This, I think you've gotten from other economics courses-- we have something called diminishing marginal utility.

我认为你们已经从其它的经济学课程中学过了,称为边际收益递减

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The exact shape of the curve is subject to discussion, but the point of diminishing marginal utility is that, as you get more and more money, the increment in utility for each extra dollar diminishes.

这条曲线的确切形状还有待讨论,但是边际效用递减规律的重点在于,你得到的钱越多,每额外的一美元的增长效用会相对减小

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It's important--that's one reason why we want policies that encourage equality of incomes-- not necessarily equality, but reasonable equality-- because the people with very low wealth have a very high marginal utility of income and people with very high wealth have very little.

这非常重要,我们需要通过政策,来引导收入公平的一个原因就是这个,不是绝对的平等,是相对的平等,因为那些低收入的人群,对收出的边际效应相当的高,而高收入人群的则小得多

耶鲁公开课 - 金融市场课程节选