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PARETO EFFICIENCY: A type of efficiency that results if one person can not be made better off without making someone else worse off. Named after Vilfredo Pareto, this criterion is the guiding theoretical notion of efficiency used in the study of economics, especially welfare economics. Pareto efficiency is generally not attained if some resources are idle or unemployed. By engaging idle resources in production, some people can have more production without reducing that available to others. A problem with Pareto efficiency, however, is that it is based on the existing distribution of income and wealth. This is one of two noted efficiency criteria used in economics. The other is Kaldor-Hicks efficiency.

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DECREASING-COST INDUSTRY

A perfectly competitive industry with a negatively-sloped long-run industry supply curve that results because expansion of the industry causes lower production cost and resource prices. A decreasing-cost industry occurs because the entry of new firms, prompted by an increase in demand, causes the long-run average cost curve of each firm to shift downward, which decreases the minimum efficient scale of production.

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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 how-to book on home repairs or a large, stuffed kitty cat. Be on the lookout for pencil sharpeners with an attitude.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
"I not only use all the brains that I have, but all that I can borrow. "

-- Woodrow Wilson, 28th US president

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