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PERFECT COMPETITION CHARACTERISTICS: The four key characteristics of perfect competition are: (1) large number of small firms, (2) identical products sold by all firms, (3) freedom of entry into and exit out of the industry, and (4) perfect knowledge of prices and technology. These four characteristics mean that a given perfectly competitive firm is unable to exert any control whatsoever over the market.

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DEMAND SHOCK

A disruption of market equilibrium caused by a change in a demand determinant and a shift of the demand curve. A demand shock can take one of two forms--a demand increase or a demand decrease. This is one of two disruptions of the market. The other is a supply shock.

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Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway looking to buy either a package of blank rewritable CDs or yellow cotton balls. Be on the lookout for malfunctioning pocket calculators.
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The 22.6% decline in stock prices on October 19, 1987 was larger than the infamous 12.8% decline on October 29, 1929.
"Each of us is issued but one life, and we know full well how it all ends. It would be regrettable to squander this one chance on someone else's appearance, someone else's experience. "

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