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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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ECONOMIES OF SCALE Declining long-run average cost that occurs as a firm increases all inputs and expands its scale of production. Economies of scale result from increasing returns to scale and are graphically illustrated by a negatively-sloped long-run average cost curve. Economies of scale usually occur for relatively small levels of production and are then overwhelmed by diseconomies of scale for relatively large production levels. Together, economies of scale and diseconomies of scale create a U-shaped long-run average cost curve.
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RED AGGRESSERINE
[What's This?]
Today, you are likely to spend a great deal of time flipping through the yellow pages looking to buy either a handcrafted bird feeder or a New York Yankees baseball cap. Be on the lookout for telephone calls from long-lost relatives.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
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"Use, do not abuse; neither abstinence nor excess ever renders man happy." -- Voltaire, philosopher
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DOC
Department of Commerce
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