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SHUTDOWN RULE: A rule stating that firm minimizes economic loss by producing no output in the short run if price is less than average variable cost. In the short run, a firm incurs total fixed cost whether or not it produces any output. As such, if the market price is falls below average total cost, it must decide if the economic loss from producing the quantity of output that equates marginal revenue and marginal cost is more or less than the economic loss incurred with shutting down production in the short run (which is equal to total fixed cost).

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PERFECT COMPETITION, CHARACTERISTICS

The four key characteristics of perfect competition are: (1) a large number of small firms, (2) identical products sold by all firms, (3) perfect resource mobility or the freedom of entry into and exit out of the industry, and (4) perfect knowledge of prices and technology.

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Today, you are likely to spend a great deal of time wandering around the downtown area looking to buy either a remote controlled sports car with an air spoiler or semi-gloss photo paper that works with your neighbor's printer. Be on the lookout for celebrities who speak directly to you through your television.
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There were no banks in colonial America before the U.S. Revolutionary War. Anyone seeking a loan did so from another individual.
"The true idealist pursues what his heart says is right in a way that his head says will work. "

-- Richard Nixon, 37th US president

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