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PIGOUVIAN TAX: A tax on an external cost, such as pollution, designed to use market forces to achieve an efficient allocation of resources. A. C. Pigou, one of the first economists to study the market failure of externalities, is credited with developing this tax system for internalizing costs external to the market. An external cost caused by pollution, for example, can be internalized if polluters pay a tax equal to the value of the external cost.

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DERIVED DEMAND

The notion that the demand for a factor of production, or an input used in the production of a good, depends on the demand for the output being produced. This concept highlights the two key aspects of factor demand. One is that factor demand depends on the value of the good being produced. Inputs that produce more valuable outputs are themselves more highly valued. Two is that factor demand depends on the productivity of the input. Inputs that produce more output are themselves more highly valued.

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Today, you are likely to spend a great deal of time going from convenience store to convenience store wanting to buy either a package of 4 by 6 index cards, the ones with lines or a 50 foot extension cord. Be on the lookout for deranged pelicans.
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More money is spent on gardening than on any other hobby.
"The human race has only one really effective weapon and that is laughter."

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