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BARRIER TO ENTRY: An institutional, government, technological, or economic restriction 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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PRODUCTION POSSIBILITIES SCHEDULE

A table of numbers that illustrates the production possibilities of an economy--the alternative combinations of two goods that an economy can produce with given resources and technology. A production possibilities schedule illustrates that the economy must give up the production of one good to produce another good--the basic economic notion of opportunity cost. A production possibilities schedule is also used to derive the highly useful production possibilities curve (or frontier).

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Today, you are likely to spend a great deal of time at the confiscated property police auction trying to buy either a coffee cup commemorating yesterday or a replacement remote control for your television. Be on the lookout for celebrities who speak directly to you through your television.
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Francis Bacon (1561-1626), a champion of the scientific method, died when he caught a severe cold while attempting to preserve a chicken by filling it with snow.
"Do not wait; the time will never be just right "

-- Napoleon Hill, author

OPEC
Organization of Petroleum Exporting Countries
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