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PERFECT COMPETITION AND EFFICIENCY: Perfect competition is the idealized market structure that achieves an efficient allocation of resources. The conditions of perfect competition, including (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, ensure that perfect competition efficiently allocates resources. This is in fact the purpose of perfect competition: a market structure that illustrates perfection, the best of all possible resource allocation worlds. The real world falls short of this perfection.
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ASSUMPTIONS, KEYNESIAN ECONOMICS The macroeconomic study of Keynesian economics relies on three key assumptions--rigid prices, effective demand, and savings-investment determinants. First, rigid or inflexible prices prevent some markets from achieving equilibrium in the short run. Second, effective demand means that consumption expenditures are based on actual income, not full employment or equilibrium income. Lastly, important savings and investment determinants include income, expectations, and other influences beyond the interest rate. These three assumptions imply that the economy can achieve a short-run equilibrium at less than full-employment production.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time at a crowded estate auction wanting to buy either a how-to book on home decorating or a set of luggage with wheels. Be on the lookout for slow moving vehicles with darkened windows.
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One of the largest markets for gold in the United States is the manufacturing of class rings.
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"Stand up to your obstacles and do something about them. You will find that they haven't half the strength you think they have." -- Norman Vincent Peale
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LRAC
Long Run Average Cost
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