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OPPORTUNITY COST: The highest valued alternative foregone in the pursuit of an activity. This is a hallmark of anything dealing with economics--and life for that matter--because any action that you take prevents you from doing something else. The ultimate source of opportunity cost is the pervasive problem of scarcity (unlimited wants and needs, but limited resources). Whenever limited resources are used to satisfy one want or need, there are an unlimited number of other wants and needs that remain unsatisfied. Herein lies the essence of opportunity cost. Doing one thing prevents doing another.
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ADVERSE SELECTION An inefficient, bad, or adverse outcome of a market exchange that results because buyers and/or sellers make decisions based on asymmetric information. This commonly results in a market that exchanges a lesser quality good, what is termed the market for lemons. Two related problems resulting from asymmetric information are moral hazard and the principal-agent problem. Two methods of lessoning the problem of adverse selection are signalling and screening.
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BLUE PLACIDOLA
[What's This?]
Today, you are likely to spend a great deal of time wandering around the downtown area wanting to buy either looseleaf notebook paper or a three-hole paper punch. Be on the lookout for slightly overweight pizza delivery guys.
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Lombard Street is London's equivalent of New York's Wall Street.
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"Do not go where the path may lead, go instead where there is no path and leave a trail." -- Ralph Waldo Emerson
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IBRD
International Bank for Reconstruction and Development
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