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PERFECT COMPETITION AND EFFICIENCY: Perfect competition is the idealized market structure that achieves an efficient allocation of resources. The conditions of perfect competition, including (1) large number of small firms, (2) identical products sold by all firms, (3) freedom of entry into and exit out of the industry, and (4) perfect knowledge of prices and technology, ensure that perfect competition efficiently allocates resources. This is in fact the purpose of perfect competition: a market structure that illustrates perfection, the best of all possible resource allocation worlds. The real world falls short of this perfection.

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CHANGE IN DEMAND

A shift of the demand curve caused by a change in one of the demand determinants. A change in demand is caused by any factor affecting demand EXCEPT price. A related, but distinct, concept is a change in quantity demanded.

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Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club seeking to buy either a birthday greeting card for your mother that doesn't look like a greeting card or a handcrafted spice rack. Be on the lookout for poorly written technical manuals.
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The New York Stock Exchange was established by a group of investors in New York City in 1817 under a buttonwood tree at the end of a little road named Wall Street.
"Long-range goals keep you from being frustrated by short-term failures "

-- J. C. Penney, Retailer

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