经济学：关于选择（Trade-off）的哲学

大学教科书，私以为是非常正确的思考世界的智慧，如曼昆所说，economics is all about decision making。笔记几个难以忘怀的经济学智慧（曼昆十大原则实在是我所有理论忘记之后记得最牢固的东西，真特么字字珠玑）：

1 People face trade-offs.（Scarcity）

2 The cost of something is what you give up to get it. （Opportunity cost）

3 Sunk cost isn't real cost. Rational people think at margin（cost and income）.

4 People respond to incentives.

5 Trade can make everyone better-off.

6 Markets are usually a good way to organize economic activity.

7 Governments can sometimes improve market outcomes.

8 A country's standard of living depends on its ability to produce goods and services.

9 Prices rise when the government prints too much money.

10 Society faces a short-run trade-off between inflation and unemployment.