边际效用价值说 marginal utility theory of value 边际效用论theory of marginal utility 边际效用递减法则 The law of diminishing marginal utility ; law kof diminishing marginal utility Insurance ..
In 1738, Daniel, trying to solve a problem in probability theory and the theoryof gambling by use of the calculus, stumbled on the concept of the law of diminishing marginalutility of money.