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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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MARKET ADJUSTMENT The economic analysis of changes in market equilibrium caused by changes in any of the five demand determinants and/or the five supply determinants. Market adjustment comes in one of eight varieties, given that the two curves comprising the market (demand curve and supply curve) can either increase or decrease, individually or simultaneously. Four adjustments involve a shift of EITHER the demand curve OR the supply curve. The other four adjustments involve shifts of BOTH the demand curve AND the supply curve.
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The penny is the only coin minted by the U.S. government in which the "face" on the head looks to the right. All others face left.
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"The art of leadership is saying no, not yes. It is very easy to say yes. " -- Tony Blair, British prime minister
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PDI
Personal Disposable Income
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