Dong Diabolic and Huang Xiaoping, the authors of " Understanding Economics in One Breath ", used very simple examples to illustrate various theories of economics tuition . It turns out that understanding economics can be so simple! 1. Marginal utility Marginal utility refers to the utility that a consumer gets when he consumes one more unit. For example, when someone eats an apple, he feels delicious at first, but he feels nothing when he eats the fifth one, which is the first one. The marginal utility of an apple is relatively high. As the number increases, the marginal utility will begin to diminish. If someone keeps eating apples and vomits, it means that the marginal utility has diminished to a negative value. 2. Sunk cost Anything you have already paid, such as time, money, etc., can no longer be taken back. Once paid, it becomes a silent cost. For example, if you buy a movie ticket, and in the event that the ticket cannot be refunded, whether you go to the mo...
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