ECO 101 Chapter Notes - Chapter 1: The Need, Opportunity Cost, Externality

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How much does it really cost? o. Economists compare if you do something to if you don"t do something. The surprising principle of comparative advantage o o. China today produces many products that americans buy in huge quantities. Law of comparative advantage- shows that even in this extreme cast, the two nations could still benefit by trading and that each could gain as a result. Trade is a win-win situation: one of the most fundamental ideas of economics is that both parties must expect to gain something in a voluntary exchange. o. Laws sometimes prohibit mutually beneficial exchanges between buyers and sellers. The importance of thinking at the margin: marginal analysis- is an examination of the additional benefits of an activity compared to the additional costs incurred by that same activity. Externalities- a shortcoming of the market cured by market methods o. Externalities- the affect parties external to the economic transaction that cause them.

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