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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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INJECTIONS LINE A graphical representation of the relation between the level of aggregate production and one or more injections. The three injections (non-consumption expenditures on aggregate production) are investment expenditures, government purchases and exports. The injections line sequentially adds, or layers, each of these three expenditures depending on the number of sectors used in the analysis (two, three, or four). The slope of the injections line depends on which if any of the expenditures are induced by aggregate production. The injections line is combined with the leakages line (containing saving, taxes, and imports) in the Keynesian injections-leakages model.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time searching the newspaper want ads seeking to buy either a graduation present for your niece or nephew or a toaster oven that has convection cooking. Be on the lookout for telephone calls from long-lost relatives.
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This isn't me! What am I?
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Two and a half gallons of oil are needed to produce one automobile tire.
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"Rowing harder doesn't help if the boat is headed in the wrong direction. " -- Kenichi Ohmae, management consultant
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AACT
American Assocation of Commodity Traders
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