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INJECTION-LEAKAGE MODEL: A model used in Keynesian economics based on the equality of non-consumption expenditures (or injections) and non-consumption uses of income (leakages). On one side of the equality is saving, taxes, and imports -- the non-consumption leakages. On the other side of the equality is investment, government purchases, and exports -- the non-consumption injections. The injection-leakage model provides an alternative to the Keynesian cross for identifying equilibrium aggregate output.

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PERFECT COMPETITION, CHARACTERISTICS

The four key characteristics of perfect competition are: (1) a large number of small firms, (2) identical products sold by all firms, (3) perfect resource mobility or the freedom of entry into and exit out of the industry, and (4) perfect knowledge of prices and technology.

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Today, you are likely to spend a great deal of time watching the shopping channel hoping to buy either a how-to book on the art of negotiation or a flower arrangement for your aunt. Be on the lookout for malfunctioning pocket calculators.
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Only 1% of the U.S. population paid income taxes when the income tax was established in 1914.
"The true idealist pursues what his heart says is right in a way that his head says will work. "

-- Richard Nixon, 37th US president

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