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BARRIER TO ENTRY: An institutional, government, technological, or economic restriction on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.

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PLANT

The physical capital (building and equipment) at a particular location used for the production of goods and services. A plant, or factory, is usually a relatively large production operation (compared with something smaller, like a shop). While plant and firm are occasionally used synonymously, a given firm might own more than one plant and a given plant might be owned by more than one firm.

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PURPLE SMARPHIN
[What's This?]

Today, you are likely to spend a great deal of time browsing through a long list of dot com websites looking to buy either a replacement remote control for your television or a replacement nozzle for your shower. Be on the lookout for fairy dust that tastes like salt.
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This isn't me! What am I?

Lewis Carroll, the author of Alice in Wonderland, was the pseudonym of Charles Dodgson, an accomplished mathematician and economist.
"Just as iron rusts from disuse, even so does inaction spoil the intellect. "

-- Leonardo da Vinci, architect, artist

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