在1738年，丹尼尔试图用微积分来解决一个概率论和赌博理论里的问题，无意间却发现了货币的边际效用递减法则的概念。
In 1738, Daniel, trying to solve a problem in probability theory and the theory of gambling by use of the calculus, stumbled on the concept of the law of diminishing marginal utility of money.
第二条是“收益递减法则”，根据该法则，工作完成得越接近完美，为完成剩余工作所需付出的努力就越大。
The second is the law of diminishing returns, which suggests that, as you near 100 per cent, you expend proportionally more effort on the remaining work.
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