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RIVAL CONSUMPTION: Consumption of a good by one person imposes a cost on, or prevents consumption of the good by, another person. Some goods, like food, have extremely rival consumption. One person, and only one person, gets the benefit. Other goods, like national defense, have no consumption rivalry, everyone can benefit simultaneously without imposing a cost on others. This is one of the two key characteristics of a good (the other is excludability) that distinguishes between common-property goods, near-public goods, private goods, and public goods.
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SCREENING When confronted by asymmetric information, the use of small bits of information, or indicators, that suggest more comprehensive information. Screening occurs when those with limited information try to identify indicators suggesting more complete information. It is used in markets with adverse selection and moral hazard, especially in labor markets and in the provision of insurance. Common methods of screening include aptitude tests, affiliations, past behavior, and personal characteristics. A related method is signalling.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time at a flea market trying to buy either a how-to book on surfing the Internet or a computer that can play music and burn CDs. Be on the lookout for letters from the Internal Revenue Service.
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The earliest known use of paper currency was about 1270 in China during the rule of Kubla Khan.
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"If you don't know where you are going, any road will get you there." -- Lewis Carroll, writer
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