Mission of Economists Gary Becker: believe that the main purpose of economics is to understand and help to alleviate poverty\ Who are the poor? How can one help?

Assets An asset is a commodity that provides a flow of services over time. E.g. a house, or a computer. A financial asset provides a flow of money over time -- a security

Structure State contingent consumption(依情 形而定的消费) Preferences under uncertainty Attitudes toward risk State-contingent- budget constraint Choice under uncertainty Diversification and risk spreading

The Theory of Economics does not furnish a body of settled conclusions immediately applicable to policy. It is a method rather than a doctrine. an apparatus of the mind, a technique of thinking which helps its possessor to draw correct conclusions John Maynard Keynes

北京大学：《微观经济学》课程教学资源（案例）Chapter 8.2（Price&GameInTVsets）我国彩电市场的价格博弈

北京大学：《微观经济学》课程教学资源（案例）Chapter 8.1（OPEC）石油输出国组织（OPEC）卡特尔的兴衰

北京大学：《微观经济学》课程教学资源（案例）Chapter 7.2（differentiation）垄断竞争下的差异化战略

北京大学：《微观经济学》课程教学资源（案例）Chapter 7.1（advertising）广告对我们意味着什么？

北京大学：《微观经济学》课程教学资源（案例）Chapter 6.2（price&discrimination）价格歧视及其难题

北京大学：《微观经济学》课程教学资源（案例）Chapter 6.1（microsoft&antitrust）新经济时代的微软反垄断案