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July 8, 2025 

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INDUCED CHANGE: A change in aggregate expenditures, especially consumption expenditures, that is "induced" or triggered by a change in national income or gross domestic product. Induced changes form the foundation for the multiplier effect, which is set in motion by autonomous changes in aggregate expenditures. In terms of Keynesian economics and the Keynesian cross diagram, induced changes are seen as a movement along in the aggregate expenditures line. This two step process, autonomous changes causing induced changes, is key to explaining business cycle fluctuations.

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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.

     See also | perfect competition | perfect competition characteristics | information | assumption | efficiency | allocation | monopoly | market control | substitute | natural monopoly | market | imperfect competition | monopolistic competition | oligopoly | price maker | price taker |


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INNOVATION PROFIT

Economic profit, the difference between the total revenue received by a firm and the total opportunity cost of production, that is attributable to innovation, the initial application of new products, technologies, or ideas. Innovation profit is one of two sources of economic profit. The other is monopoly profit that arises due to market control. The generation of innovation profit is an important incentive that by rewarding individual innovative behavior enables society-wide benefits from the resulting innovations.

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Today, you are likely to spend a great deal of time browsing through a long list of dot com websites trying to buy either a coffee cup commemorating yesterday or a replacement remote control for your television. Be on the lookout for celebrities who speak directly to you through your television.
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A communal society, a prime component of Karl Marx's communist philosophy, was advocated by the Greek philosophy Plato.
"Progress always involves risk. You can't steal second base and keep your foot on first. "

-- Frederick B. Wilcox

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Bank for International Settlements
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