邊際效益的秘密：為何滿足感漸減？This article explains the concept of marginal utility in economics, which refers to the additional satisfaction gained from consuming one more unit of a good or service. It points out that marginal utility can be positive, zero, or negative, and this affects consumer purchasing behavior.

The article also traces the origin of the concept, noting that it was developed as economists sought to solve the "paradox of value" (also known as the water-diamond paradox). Understanding marginal utility helps explain why having more of something can sometimes lead to less satisfaction, and how this concept can be applied in business decisions and personal spending choices.

In conclusion, the article encourages readers to consider marginal utility when shopping to make more informed decisions.