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WEIGHT: When applied to location theory, the relative attractive force of one activity to another based on transportation cost. The weight of an activity in this context is comparable to the weight of matter subject to gravitation forces. The weight of an activity is greater if it incurs higher transportation cost. As such, it is attracted, or pulled, to other activities to reduce transportation cost. With the weight (transportation cost) of an activity is often related to physical weight (heavier items cost more to move), it need not be. Other factors affecting weight include special handling (security, comfort) and type of transportation (walking, automobile, airplane).
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FREE-RIDER PROBLEM A problem underlying the provision of public goods that occurs when a person consumes or benefits from a good without making payment. The free-rider problem is the primary reason that public goods are produced by governments. Because public goods are characterized by the inability to exclude nonpayers, once a public good is produced anyone, everyone, can consume without making payment, that is, get a "free ride." Voluntary payments like those occurring in markets will not provide enough revenue to pay production costs. The only way to finance public goods is to force free-riders, and everyone else, to pay through government taxes. The free-rider problem also applies to common-property goods.
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WHITE GULLIBON
[What's This?]
Today, you are likely to spend a great deal of time at a garage sale seeking to buy either a birthday greeting card for your grandmother or a coffee cup commemorating yesterday. Be on the lookout for the happiest person in the room.
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This isn't me! What am I?
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In the Middle Ages, pepper was used for bartering, and it was often more valuable and stable in value than gold.
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"I don't subscribe to the thesis, 'Let the buyer beware,' I prefer the disregarded one that goes, 'Let the seller be honest.'" -- Isaac Asimov, Author
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IGARCH
Integrated Generalized Autoregressive Conditional Heteroskedasticity
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