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MARGINAL PROPENSITY TO CONSUME: The proportion of each additional dollar of household income that is used for consumption expenditures. Or alternatively, this is the change in consumption expenditures due to a change in disposable income. Abbreviated MPC, the marginal propensity to consume is the slope of the consumption or propensity-to-consume line that forms the foundation for Keynesian economics. As such, it also takes center stage for the slope of the aggregate expenditure line and the multiplier effect. The sum of the marginal propensity to consume and the related concept, the marginal propensity to save, is equal to one.

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FIAT MONEY

A medium of exchange (money) with value in exchange, but little or no value in use. Modern paper currency, coins, and checkable deposits are fiat money. The value of fiat money comes from the public's general willingness to accept it in exchange for other goods. This willingness comes from the fact that EVERYONE is willing to accept fiat money in exchange, which largely depends on the public's confidence in the authority (usually government) issuing the fiat money. Fiat money is NOT valuable unto itself, but it is valuable for what it can buy. In the march toward economic complexity, fiat money emerged from commodity money, money with both value in exchange and value in use.

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BLACK DISMALAPOD
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Today, you are likely to spend a great deal of time visiting every yard sale in a 30-mile radius wanting to buy either a battery-powered, rechargeable vacuum cleaner or a remote controlled World War I bi-plane. Be on the lookout for telephone calls from long-lost relatives.
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Mark Twain said "I wonder how much it would take to buy soap buble if there was only one in the world."
"The best way to cheer yourself up is to try to cheer somebody else up."

-- Mark Twain

CPI-U
Consumer Price Index-All Urban Consumers
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