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ENTRY BARRIERS: Institutional, government, technological, or economic restrictions on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.
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PERFECTLY ELASTIC An elasticity alternative in which infinitesimally small changes in one variable (usually price) cause infinitely large changes in another variable (usually quantity). Quantity is infinitely responsive to price. Any change in price, no matter how small, triggers an infinite change in quantity. This characterization of elasticity is most important for the price elasticity of demand and the price elasticity of supply. Perfectly elastic is one of five elasticity alternatives. The other four are perfectly inelastic, relatively elastic, relatively inelastic, and unit elastic.
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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time wandering around the shopping mall hoping to buy either a large stuffed brown and white teddy bear or a replacement washer for your kitchen faucet. Be on the lookout for jovial bank tellers.
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Two and a half gallons of oil are needed to produce one automobile tire.
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"Don't waste your effort on a thing that results in a petty triumph unless you are satisfied with a life of petty issues. " -- John D. Rockefeller, industrialist
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FITW
Federal Income Tax Witholding
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