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MARGINAL COST CURVE: A curve that graphically represents the relation between marginal cost incurred by a firm in the short-run product of a good or service and the quantity of output produced. This curve is constructed to capture the relation between marginal cost and the level of output, holding other variables, like technology and resource prices, constant. The marginal cost curve is U-shaped. Marginal cost is relatively high at small quantities of output, then as production increases, declines, reaches a minimum value, then rises. This shape of the marginal cost curve is directly attributable to increasing, then decreasing marginal returns (and the law of diminishing marginal returns).

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UNCERTAINTY

The observation and recognition that information, especially information about the future, is not known. While any number of events might occur in the future, uncertainty exists because which specific events will occur is unknown. A related concept is risk, which is assigning probabilities to potential future outcomes. Uncertainty is a central component in the economic study of information.

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Today, you are likely to spend a great deal of time calling an endless list of 800 numbers seeking to buy either several magazines on computer software or a T-shirt commemorating the second moon landing. Be on the lookout for telephone calls from long-lost relatives.
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The first U.S. fire insurance company was established by Benjamin Franklin in 1752 in Philadelphia.
"It is the mark of an educated mind to be able to entertain a thought without accepting it."

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