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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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MARGINAL REVENUE, MONOPOLY The change in total revenue resulting from a change in the quantity of output sold. Marginal revenue indicates how much extra revenue a monopoly receives for selling an extra unit of output. It is found by dividing the change in total revenue by the change in the quantity of output. Marginal revenue is the slope of the total revenue curve and is one of two revenue concepts derived from total revenue. The other is average revenue. To maximize profit, a monopoly equates marginal revenue and marginal cost.
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BLACK DISMALAPOD
[What's This?]
Today, you are likely to spend a great deal of time at a garage sale trying to buy either a coffee cup commemorating last Friday (you know why) or a wall poster commemorating the first day of spring. Be on the lookout for bottles of barbeque sauce that act TOO innocent.
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This isn't me! What am I?
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The average bank teller loses about $250 every year.
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"Difficulty is the excuse history never accepts. " -- Edward R. Murrow, News broadcaster
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ISIC
International Standard Industrial Classification
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