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AGGREGATE EXPENDITURES LINE: A line representing the relation between aggregate expenditures and gross domestic product used in the Keynesian cross. The aggregate expenditure line is obtained by adding investment expenditures, government purchases, and net exports to the consumption line. As such, the slope of the aggregate expenditure line is largely based on the slope of the consumption line (which is the marginal propensity to consume), with adjustments coming from the marginal propensity to invest, the marginal propensity for government purchases, and the marginal propensity to import. The intersection of the aggregate expenditures line and the 45-degree line identifies the equilibrium level of output in the Keynesian cross.
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PERFECT COMPETITION, REALISM Perfect competition is an idealized market structure that does NOT exist in the real world. While some real world industries might come relatively close to one or two of the four key characteristics of perfect competition, none matches all four sufficiently that they can be declared PERFECTLY competitively. Some industries come close on the large number of small firms and the identical product characteristics. A few industries have relatively good, although not perfect, information about prices and technology. However, almost all industries fall far short of the perfect mobility characteristics.
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Playing The STOCK MARKETThe hazards of being a pedestrian are many. Of course we have a good chance of crossing paths with a rabid bengal tiger that has highjacked a street cleaner and intends to whitewash every pair of jogging shoes encountered. Or a throng of overzealous religious fanatics might try to slip fresh flowers into our hands and literature into our pockets. And especially when we amble through the financial district, we might be crushed by falling stock market investors who have mistakenly BOUGHT HIGH and SOLD LOW. While the actions of the bengal tiger and overzealous religious fanatics might be understandable, what's so almighty important about the stock market that would make investors place the well-being of innocent pedestrians in jeopardy?
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YELLOW CHIPPEROON
[What's This?]
Today, you are likely to spend a great deal of time searching the newspaper want ads trying to buy either a T-shirt commemorating the 2000 Olympics or a genuine fake plastic Tiffany lamp. Be on the lookout for telephone calls from former employers.
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This isn't me! What am I?
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
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"A winner is someone who recognizes his God-given talents, works his tail off to develop them into skills, and uses those skills to accomplish his goals. " -- Larry Bird, basketball player
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BJE
Bell Journal of Economics
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