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ABSTRACTION: Simplifying the complexities of the real world by ignoring (hopefully) unimportant details while doing economic analysis. Abstraction is often criticized because it's, well, it's JUST NOT REALISTIC. However, when done correctly (ignoring things that JUST DON'T MATTER), then the pursuit of knowledge is greatly enhanced by abstraction. For example, when travelling cross country along a high-speed interstate highway, a paper road map is a handy tool. It shows towns and cities along the way, the major intersections, rest stop locations, and other important points of interest. However, it ignores unimportant details. It doesn't realistically show the location of every tree, bush, or blade of grass. Why bother? This information won't enhance your road trip.
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INFORMATION SEARCH The decision to seek out or produce information based on a comparison of the cost of acquiring the information and the benefit obtained from the information. Efficient information search is achieved with a equality between the marginal cost of search and the marginal benefit of search. Because the marginal cost of search is invariably greater than zero, search effort stops short of acquiring complete information.
Complete Entry | Visit the WEB*pedia |
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PURPLE SMARPHIN
[What's This?]
Today, you are likely to spend a great deal of time surfing the Internet trying to buy either a desktop calendar with all federal and state holidays highlighted or a half-dozen helium filled balloons. Be on the lookout for celebrities who speak directly to you through your television.
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This isn't me! What am I?
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There were no banks in colonial America before the U.S. Revolutionary War. Anyone seeking a loan did so from another individual.
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"Anything's possible. You can be told you have a 90% chance or a 50% chance or a 1% chance, but you have to believe, and you have to fight. " -- Lance Armstrong, cyclist
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SPE
Subgame Perfect Equilibrium
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