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ENTRY BARRIERS: Institutional, government, technological, or economic restrictions 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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INNOVATION

The initial application of new products, technologies, and ideas that usually generate a beneficial improvement in society and the economy. In contrast to an invention, which is the act of creation, an innovation is the implementation of a product, technology, or idea. Innovations are changes in existing institutions and the status quo, prompted by risk-taking entrepreneurs, that promote prosperity and improved living standards.

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Today, you are likely to spend a great deal of time searching the newspaper want ads hoping to buy either a bookshelf that will fit in your closet or a birthday greeting card for your grandfather. Be on the lookout for broken fingernail clippers.
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On a typical day, the United States Mint produces over $1 million worth of dimes.
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