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NEED: This is often thought of as a physiological or biological requirement for maintaining life, such as the need for air, water, food, shelter, and sleep. Satisfaction is achieved by fulfilling needs. Physiological needs should be contrasted with psychological wants that make life more enjoyable but are not necessary to stay alive. However, when push comes to shove, and the nitty gets down to the gritty, it matters very little to markets if people need goods or want goods, so long as they are motivated to satisfy them. This motivation is what drives economic activity.
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SUBSTITUTE GOOD In general, one of two (or more) goods that are related in an either/or fashion. In terms of demand, substitute goods are those that provide the same basic satisfaction of a want or need when consumed. In terms of supply, substitute goods are those that use the same resource for production in an exclusionary manner. A substitute good is one of two ways that goods are related. The other is a complement good.
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ORANGE REBELOON [What's This?]
Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway trying to buy either a pair of leather sandals that won't cause blisters or clothing for your kitty cats. Be on the lookout for letters from the Internal Revenue Service. Your Complete Scope
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Francis Bacon (1561-1626), a champion of the scientific method, died when he caught a severe cold while attempting to preserve a chicken by filling it with snow.
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"The greatest use of life is to spend it for something that will outlast it." -- William James, psychologist
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ARP Average Revenue Product
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