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S&P 500: The abbreviation for the Standard & Poor's 500, an index of the prices of 500 corporate stocks traded on the New York Stock Exchange. It includes an assortment of stocks for industrial, transportation, and utility companies. It also includes a larger number of stocks than the comparable Dow Jones composite index, which means it's often considered a better measure of the overall performance of the stock market. Less commonly publicized are separate Standard & Poor's indexes for industrial, transportation, utility, and financial stocks.

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PERFECT COMPETITION, REALISM

Perfect competition is an idealized market structure that does NOT exist in the real world. While some real world industries might come relatively close to one or two of the four key characteristics of perfect competition, none matches all four sufficiently that they can be declared PERFECTLY competitively. Some industries come close on the large number of small firms and the identical product characteristics. A few industries have relatively good, although not perfect, information about prices and technology. However, almost all industries fall far short of the perfect mobility characteristics.

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APLS

RED AGGRESSERINE
[What's This?]

Today, you are likely to spend a great deal of time at a crowded estate auction looking to buy either a T-shirt commemorating the first day of winter or software that won't crash your computer. Be on the lookout for small children selling products door-to-door.
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This isn't me! What am I?

The earliest known use of paper currency was about 1270 in China during the rule of Kubla Khan.
"Rowing harder doesn't help if the boat is headed in the wrong direction. "

-- Kenichi Ohmae, management consultant

MSE
Minimum Efficient Scale
A PEDestrian's Guide
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