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IMPERFECT COMPETITION: Any markets or industries that do not match the criteria for perfect competition. The key characteristics of perfect competition are: (1) a 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 are essentially impossible to match in the real world.

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UNDERGROUND ECONOMY

Illegal and unreported market transactions and productive activity that escape the watchful eyes of official record keepers. By most estimates, a substantial amount of productive activity takes place in the underground economy of the United States. Of course, these are only estimates because such activity, by definition, goes unreported. If activity in the underground economy is added to official activity in the "overground" economy, then gross domestic product could be boosted by as much as 25 percent to 50 percent, or more. Inclusion of employment in the underground economy is also likely reduce the official unemployment rate by a few percentage points.

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BLACK DISMALAPOD
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Today, you are likely to spend a great deal of time at a crowded estate auction looking to buy either a how-to book on the art of negotiation or a flower arrangement for your aunt. Be on the lookout for strangers with large satchels of used undergarments.
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The New York Stock Exchange was established by a group of investors in New York City in 1817 under a buttonwood tree at the end of a little road named Wall Street.
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-- Socrates, philosopher

ACIR
Advisory Council on Intergovernmental Relations
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