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LONG-RUN INDUSTRY SUPPLY CURVE: The relation between market price and the quantity supplied by all firms in a perfectly competitive industry after the industry as completed its long-run adjustment. The long-run industry supply curve effectively traces out a series of equilibrium prices and quantities the reflect long-run adjustments of a perfectly competitive industry to demand shocks. This long-run adjustment can take one of three paths: increasing, decreasing, and constant. These three adjustment paths indicate an increasing-cost industry, decreasing-cost industry, and constant-cost industry, respectively.

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PERFECT COMPETITION, REALISM

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 one or two of the four key characteristics of perfect competition, none matches all four sufficiently that they can be declared PERFECTLY competitively. 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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BEIGE MUNDORTLE
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Today, you are likely to spend a great deal of time at a flea market looking to buy either a green fountain pen or a handcrafted bird house. Be on the lookout for gnomes hiding in cypress trees.
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The Dow Jones family of stock market price indexes began with a simple average of 11 stock prices in 1884.
"I don't know the key to success, but the key to failure is trying to please everybody. "

-- Bill Cosby

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Liquid Petroleum Gas
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