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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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HORIZONTAL EQUITY

A tax equity principle stating that people with the same ability to pay taxes should pay the same amount of taxes. This is one of two equity principles related to the ability-to-pay principle. The other is vertical equity, which states that people with a different ability to pay taxes should pay a different amount of taxes.

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Today, you are likely to spend a great deal of time searching the newspaper want ads looking to buy either a coffee table shaped like the state of Florida or storage boxes for your summer clothes. Be on the lookout for the last item on a shelf.
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In his older years, Andrew Carnegie seldom carried money because he was offended by its sight and touch.
"Do you want to be safe and good, or do you want to take a chance and be great?"

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WPO
Weakly Pareto Optimal
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