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OLIGOPOLY, CONCENTRATION: Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.

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INNOVATION

The initial application of new products, technologies, and ideas that usually generate a beneficial improvement in society and the economy. In contrast to an invention, which is the act of creation, an innovation is the implementation of a product, technology, or idea. Innovations are changes in existing institutions and the status quo, prompted by risk-taking entrepreneurs, that promote prosperity and improved living standards.

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Today, you are likely to spend a great deal of time at an auction seeking to buy either a genuine down-filled snow parka or throw pillows for your living room sofa. Be on the lookout for letters from the Internal Revenue Service.
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The 22.6% decline in stock prices on October 19, 1987 was larger than the infamous 12.8% decline on October 29, 1929.
"No man, for any considerable time, can wear one face to himself and another to the multitude without finally getting bewildered as to which may be true."

-- Nathanial Hawthorne, Author

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