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January 21, 2026 

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PERFECT COMPETITION, REALISM: Perfect competition is an idealized market structure that does NOT exist in the real world. While some real world industries might come relatively close to one or two of the four key characteristics of perfect competition, none matches all four sufficiently that they can be declared PERFECTLY competitively. Some industries come close on the large number of small firms and the identical product characteristics. A few industries have relatively good, although not perfect, information about prices and technology. However, almost all industries fall far short of the perfect mobility characteristics.

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LONG-RUN AVERAGE COST

The per unit cost of producing a good or service in the long run when all inputs under the control of the firm are variable. In other words, long-run total cost divided by the quantity of output produced. Long-run average cost is guided by returns to scale.

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Today, you are likely to spend a great deal of time at the confiscated property police auction trying to buy either a 200-foot blue garden hose or a video camera with stop action features. Be on the lookout for deranged pelicans.
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John Maynard Keynes was born the same year Karl Marx died.
"The more you praise and celebrate your life, the more there is in life to celebrate."

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