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REALISM OF PERFECT COMPETITION: Perfect competition is an idealized market structure that does NOT exist in the real world. While some real world industries might come relatively close to a one or two of the four key characteristics of perfect competition, none matches all four sufficiently that we can declare a perfectly competitively industry. Some industries come close on the large number of small firms and the identical product characteristics. A few industries have relatively good, although not perfect, information about prices and technology. However, almost all industries fall far short of the perfect mobility characteristics.
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ASSUMPTIONS, CLASSICAL ECONOMICS Classical economics, especially as directed toward macroeconomics, relies on three key assumptions--flexible prices, Say's law, and saving-investment equality. Flexible prices ensure that markets adjust to equilibrium and eliminate shortages and surpluses. Say's law states that supply creates its own demand and means that enough income is generated by production to purchase the resulting production. The saving-investment equality ensures that any income leaked from consumption into saving is replaced by an equal amount of investment. Although of questionable realism, these three assumptions imply that the economy would operate at full employment.
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time strolling through a department store trying to buy either storage boxes for your income tax returns or an AC adapter for your CD player. Be on the lookout for deranged pelicans.
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Mark Twain said "I wonder how much it would take to buy soap buble if there was only one in the world."
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"I know the price of success; dedication, hard work and an unremitting devotion to the things you want to see happen. " -- Frank Lloyd Wright, architect
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BOA
Basic Ordering Agreement
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