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OLIGOPOLY, CONCENTRATION: Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.

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UNLIMITED WANTS AND NEEDS

A basic condition of human existence which means that people are never totally satisfied with the quantity and variety of goods and services the consume. It means that people never get enough, that there's always something else that they would want or need. Unlimited wants and needs are one half of the fundamental problem of scarcity that has plagued humanity since the beginning of time. The other half of the scarcity problem is limited resources.

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YELLOW CHIPPEROON
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Today, you are likely to spend a great deal of time wandering around the downtown area looking to buy either a remote controlled train set or a genuine down-filled snow parka. Be on the lookout for deranged pelicans.
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This isn't me! What am I?

A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
"There are no shortcuts to any place worth going. "

-- Beverly Sills, Opera singer

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