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ENTRY BARRIERS: Institutional, government, technological, or economic restrictions on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.
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BREAKEVEN OUTPUT The quantity of output in which the total revenue is equal to total cost such that a firm earns exactly a normal profit, but no economic profit. Breakeven output can be identified by the intersection of the total revenue and total cost curves, or by the intersection of the average total cost and average revenue curves. The most straightforward way of noting breakeven output, however, is with the profit curve. For a perfectly competitive firm breakeven output occurs where price is equal to average total cost.
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time searching the newspaper want ads trying to buy either a Boston Red Sox baseball cap or a square lamp shade with frills along the bottom. Be on the lookout for high interest rates.
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Helping spur the U.S. industrial revolution, Thomas Edison patented nearly 1300 inventions, 300 of which came out of his Menlo Park "invention factory" during a four-year period.
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"Life is no brief candle to me. It is a sort of splendid torch which I have got a hold of for the moment, and I want to make it burn as brightly as possible before handing it on to future generations." -- George Bernard Shaw
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DJ
Dow Jones
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