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PERFECT COMPETITION CHARACTERISTICS: The four key characteristics of perfect competition are: (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. These four characteristics mean that a given perfectly competitive firm is unable to exert any control whatsoever over the market.

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PRODUCTION TIME PERIODS

Alternative time periods used to differentiate between variable inputs and fixed inputs that are key to the analysis of short-run production and long-run production by a firm. The two primary time periods are short run and long run. Two secondary periods are very short run (market period) and very long run. Time periods are specified based on the number of inputs that are fixed or variable.

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RED AGGRESSERINE
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Today, you are likely to spend a great deal of time at a flea market trying to buy either a 200-foot blue garden hose or a video camera with stop action features. Be on the lookout for letters from the Internal Revenue Service.
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On a typical day, the United States Mint produces over $1 million worth of dimes.
"When you play, play hard; when you work, don't play at all. "

-- Theodore Roosevelt, 26th US president

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