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LONG-RUN MARGINAL COST CURVE: A graphical representation of the relationship between long-run marginal cost and the quantity of output produced. Like other marginal curves, the long-run marginal cost curve follows the average-marginal rule relative to the long-run average cost curve. In all outward appearance, the long-run marginal cost curve looks very much like the short-run marginal cost, that is, it is U-shaped. However, the U-shape is attributable to returns to scale rather than increasing and decreasing marginal returns.

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NATURAL SELECTION

The notion that firms best suited to the economic environment on the ones that tend to survive. The natural selection of business firms is an adaptation of the biological process of natural selection, in which biological entities best suited to the natural environment are the ones that survive. The concept of economic natural selection is aimed primarily at the profit-maximization assumption. Although firms might not seek to maximize profit on a day-to-day basis, those that come closest (intentionally or unintentionally) are the ones that remain in business.

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Today, you are likely to spend a great deal of time at a garage sale hoping to buy either a wall poster commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki or decorative garden figurines. Be on the lookout for crowded shopping malls.
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The standard "debt" notation I.O.U. does not mean "I owe you," but actually stands for "I owe unto..."
"Never confuse a single defeat with a final defeat."

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