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DIAMOND-WATER PARADOX: The perplexing observation that water, which is more useful than diamonds, has a lower price. If price is related to utility, how can this occur? This paradox was first proposed by classical economists in the 19th century and was subsequently used as a stepping stone for developing the notion of marginal utility and the role it plays in the demand price of a good. The paradox is magically cleared up with an understanding of marginal utility and total utility. People are willing to pay a higher price for goods with greater marginal utility. As such, water which is plentiful has enormous total utility, but a low price because of a low marginal utility. Diamonds, however, have less total utility because they are less plentiful, but a high price because of a high marginal utility.

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FEDERAL DEFICIT, AGGREGATE EXPENDITURES DETERMINANT

One of several specific aggregate expenditures determinants assumed constant when the aggregate expenditures line is constructed, and that shifts the aggregate expenditures line when it changes. An increase in the federal deficit causes an increase (upward shift) of the aggregate expenditures line. A decrease in the federal deficit causes a decrease (downward shift) of the aggregate expenditures line. Other notable aggregate expenditures determinants include consumer confidence, financial wealth, inflationary expectations, and exchange rates.

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Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club hoping to buy either arch supports for your shoes or an AC adapter that works with your MPG player. Be on the lookout for strangers with large satchels of used undergarments.
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Helping spur the U.S. industrial revolution, Thomas Edison patented nearly 1300 inventions, 300 of which came out of his Menlo Park "invention factory" during a four-year period.
"How wonderful it is that nobody need wait a single moment before starting to improve the world. "

-- Anne Frank, diarist

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