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OLIGOPOLY, REALISM: Real world markets are heavily populated by oligopoly. About half of all output produced in the U.S. economy each year is done so by oligopoly firms. Other industrialized nations can make a similar claim. Oligopoly markets arise in a wide assortment different industries, ranging from manufacturing to retail trade to resource extraction to financial services.

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TWO-SECTOR INJECTIONS-LEAKAGES MODEL

A variation of the Keynesian injections-leakages model that includes the two private sectors, the household sector and the business sector. This variation, often termed the saving-investment model or private sector injections-leakages model, captures the interaction between induced saving (and indirectly induced consumption expenditures) and autonomous investment expenditures. This model provides an alternative to the two-sector aggregate expenditures (Keynesian cross) analysis of the macroeconomy, including equilibrium, disequilibrium, and the multiplier. Equilibrium is identified as the intersection between the saving line and the investment line. Two related variations are the three-sector injections-leakages model and the four-sector injections-leakages model.

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YELLOW CHIPPEROON
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Today, you are likely to spend a great deal of time flipping through the yellow pages looking to buy either a coffee cup commemorating the first day of winter or a video game player. Be on the lookout for the last item on a shelf.
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In his older years, Andrew Carnegie seldom carried money because he was offended by its sight and touch.
"Be civil to all; sociable to many; familiar with few; friend to one; enemy to none. "

-- Benjamin Franklin, statesman

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