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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 UTILITY OF INCOME The change in utility resulting from a given change in income. This is a specialized case of the general notion of marginal utility, which is simply the change in utility resulting from a given change in the consumption of a good. Marginal utility of income is key to identifying alternative risk preferences, including risk aversion, risk neutrality, and risk loving. These three risk preferences are indicated by three marginal utility of income possibilities, decreasing (risk aversion), increasing (risk loving), and constant (risk neutrality).
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GRAY SKITTERY
[What's This?]
Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway looking to buy either a really, really exciting, action-filled video game or a coffee cup commemorating the moon landing. Be on the lookout for attractive cable television service repair people.
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Much of the $15 million used by the United States to finance the Louisiana Purchase from France was borrowed from European banks.
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"If you don't know where you are going, any road will get you there." -- Lewis Carroll, writer
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SRO
Self-regulatory Organizations
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