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GOODS: When used without an adjective modifier (like "final" goods or "intermediate" goods), this generically means physical, tangible products used to satisfy people's wants and needs. This term good should be contrasted with the term services, which captures the intangible satisfaction of wants and needs. As such, you will frequently see the plural combination of these two phrases together "goods and services" to indicate the wide assortment of economic goods produced using the economy's scarce resources. As you might imagine this general notion of wants and needs satisfying goods and services pops up throughout the study of economics.

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MARGINAL PRODUCTIVITY THEORY

A theory used to analyze the profit-maximizing quantity of inputs (that is, the services of factor of productions) purchased by a firm in the production of output. Marginal-productivity theory indicates that the demand for a factor of production is based on the marginal product of the factor. In particular, a firm is generally willing to pay a higher price for an input that is more productive and contributes more to output. The demand for an input is thus best termed a derived demand.

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Today, you are likely to spend a great deal of time touring the new suburban shopping complex seeking to buy either a birthday greeting card for your grandfather or a weathervane with a cow on top. Be on the lookout for telephone calls from former employers.
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The standard "debt" notation I.O.U. does not mean "I owe you," but actually stands for "I owe unto..."
"Success is going from failure to failure without a loss of enthusiasm. "

-- Winston Churchill, British statesman

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