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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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COMPARATIVE ADVANTAGE

The ability to produce one good at a relatively lower opportunity cost than other goods, especially compared to production in another country. Every person or country has a comparative advantage in production of at least one good or service, even with relatively limited production technology. A related, but contrasting concept is absolute advantage. Both terms are perhaps most important to the study of international trade, but also provide insight into other exchanges.

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PURPLE SMARPHIN
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Today, you are likely to spend a great deal of time at a going out of business sale wanting to buy either a set of luggage with wheels or a birthday gift for your aunt. Be on the lookout for telephone calls from former employers.
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The wealthy industrialist, Andrew Carnegie, was once removed from a London tram because he lacked the money needed for the fare.
"The majority of men meet with failure because of their lack of persistence in creating new plans to take the place of those that fail. "

-- Napoleon Hill, author

JFE
Journal of Financial Economics
A PEDestrian's Guide
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