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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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MARGINAL FACTOR COST CURVE, PERFECT COMPETITION

A curve that graphically represents the relation between marginal factor cost incurred by a perfectly competitive firm for hiring an input and the quantity of input employed. A profit-maximizing perfectly competitive firm hires the quantity of input found at the intersection of the marginal factor cost curve and marginal revenue product curve. The marginal factor cost curve for a perfectly competitive firm with no market control is horizontal.

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RED AGGRESSERINE
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Today, you are likely to spend a great deal of time at a garage sale wanting to buy either a how-to book on home decorating or a set of luggage with wheels. Be on the lookout for the happiest person in the room.
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On a typical day, the United States Mint produces over $1 million worth of dimes.
"In the long run men hit only what they aim at. "

-- Henry David Thoreau, philosopher

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