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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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AVERAGE-MARGINAL RELATION A mathematical connection between a marginal value and the corresponding average value stating that the change in the average value depends on a comparison between the average and the marginal. This mathematical relation between average and marginal surfaces throughout the study of economics, especially production (average product and marginal product), cost (average total cost and marginal cost), and revenue (average revenue and marginal revenue). A similar relation is that between a total value and the corresponding marginal value.
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YELLOW CHIPPEROON
[What's This?]
Today, you are likely to spend a great deal of time at the confiscated property police auction trying to buy either a coffee cup commemorating next Thursday or a replacement remote control for your stereo system. Be on the lookout for high interest rates.
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This isn't me! What am I?
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Al Capone's business card said he was a used furniture dealer.
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"People of mediocre ability sometimes achieve outstanding success because they don't know when to quit. " -- George Allen, U.S. senator
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AS-AD
Aggregate Supply-Aggregate Demand Model
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