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July 22, 2026 

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REALISM OF PERFECT COMPETITION: 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 a one or two of the four key characteristics of perfect competition, none matches all four sufficiently that we can declare a perfectly competitively industry. 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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INCREASING MARGINAL RETURNS

In the short-run production by a firm, an increase in the variable input results in an increase in the marginal product of the variable input. Increasing marginal returns typically surface when the first few quantities of a variable input are added to a fixed input. This is one of two alternatives for marginal returns. The other is decreasing marginal returns. A related phenomenon for long-run production is increasing returns to scale.

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ORANGE REBELOON
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Today, you are likely to spend a great deal of time strolling around a discount warehouse buying club hoping to buy either a replacement remote control for your stereo system or a computer that can play video games and burn DVDs. Be on the lookout for bottles of barbeque sauce that act TOO innocent.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
"You can't build a reputation on what you are going to do."

-- Henry Ford, automaker

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