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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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AGGREGATE EXPENDITURES LINE A graphical depiction of the relation between aggregate expenditures by the four macroeconomic sectors (household, business, government, and foreign) and the level of aggregate income or production. In Keynesian economics, the aggregate expenditures line is the essential component of the Keynesian cross analysis used to identify equilibrium income and production. Like any straight line, the aggregate expenditures line is characterized by vertical intercept, which indicates autonomous expenditures, and slope, which indicates induced expenditures. The aggregate expenditures line used in Keynesian economics is derived by adding or stacking investment, government purchases, and net exports to the consumption line.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time strolling through a department store trying to buy either an AC adapter that won't fry your computer or a case for your designer sunglasses. Be on the lookout for the happiest person in the room.
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This isn't me! What am I?
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Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
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"Don't be afraid if things seem difficult in the beginning. That's only the initial impression. The important thing is not to retreat; you have to master yourself." -- Olga Korbut, Gymnast
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KCBT
Kansas City Board of Trade
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