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Free market is a summary term for an array of exchanges that take place in society. Each exchange is undertaken as a voluntary agreement between two people or between groups of people represented by agents. These two individuals (or agents) exchange two economic goods, either tangible commodities or nontangible services. Thus, when I buy a newspaper from a newsdealer for fifty cents, the newsdealer and I exchange two commodities: I give up fifty cents, and the newsdealer gives up the newspaper. Or if I work for a corporation, I exchange my labor services, in a mutually agreed way, for a monetary salary; here the corporation is represented by a manager (an agent) with the authority to hire….
Free Trade, from the Concise Encyclopedia of Economics
For more than two centuries, economists have steadfastly promoted free trade among nations as the best trade policy. Despite this intellectual barrage, many practical men and women of affairs continue to view the case for free trade skeptically, as an abstract argument made by ivory-tower economists with, at most, one foot on terra firma. Such people “know” that our vital industries must be protected from foreign competition.
The divergence between economists’ beliefs and those of (even well-educated) men and women on the street seems to arise in making the leap from individuals to nations. In running our personal affairs, virtually all of us exploit the advantages of free trade and comparative advantage without thinking twice….
Marginalism, from the Concise Encyclopedia of Economics
Adam Smith struggled with what came to be called the paradox of “value in use” versus “value in exchange.” Water is necessary to existence and of enormous value in use. Diamonds are frivolous and clearly not essential. But the price of diamonds—their value in exchange—is far higher than that of water. What perplexed Smith is now rationally explained in the first chapters of every college freshman’s introductory economics text. Smith had failed to distinguish between “total” utility and “marginal” utility. The elaboration of this insight transformed economics in the late nineteenth century, and the fruits of the marginalist revolution continue to set the basic framework for contemporary microeconomics….
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