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BARTER EXCHANGE: A method of trading goods, commodities, or services, directly for one another without the use of money. In a barter exchange one good is traded directly for another. This sort of exchange ultimately requires a double coincidence of wants, meaning that each trader has what the other trader wants and wants what the other has. Without a double coincidence of wants the exchange process can become exceedingly complex, requiring a great deal of resources to complete transactions, resources that can not be used for production. In fact, inefficient barter trading was the primary reason that money was invented. With money, more resources can be used for production and fewer are needed for trading. See market.

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SHORTAGE

A condition in the market in which the quantity demanded is greater than the quantity supplied at the existing price. Because buyers are unable to buy as much of the good as they want, a shortage generally causes an increase in the market price, which then acts to restore equilibrium. A shortage, which also goes by the terms excess demand and sellers' market, is one of two basic states of disequilibrium for the market. The other is surplus.

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Today, you are likely to spend a great deal of time at a dollar discount store wanting to buy either a velvet painting of Elvis Presley or a wall poster commemorating yesterday. Be on the lookout for crowded shopping malls.
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Junk bonds are so called because they have a better than 50% chance of default, carrying a Standard & Poor's rating of CC or lower.
"Gravitation can not be held responsible for people falling in love."

-- Albert Einstein

LRMC
Long Run Marginal Cost
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