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ENTRY BARRIER: An institutional, government, technological, or economic restriction on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.
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MARGINAL PROPENSITY TO INVEST The change in business investment expenditures induced by a change in income or production (national income or gross domestic product). The marginal propensity to invest (abbreviated MPI) is another term for the slope of the investment line and is calculated as the change in investment divided by the change in income or production. The MPI plays a role in Keynesian economics. It augments the slope of the aggregate expenditures line and is part to the multiplier process. A related marginal measure is the marginal propensity to consume.
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ORANGE REBELOON
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Today, you are likely to spend a great deal of time at the confiscated property police auction seeking to buy either a replacement remote control for your television or a replacement nozzle for your shower. Be on the lookout for door-to-door salesmen.
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A thousand years before metal coins were developed, clay tablet "checks" were used as money by the Babylonians.
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"The only thing that will stop you from fulfilling your dreams is you. " -- Tom Bradley, former Los Angeles mayor
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BIS
Bank for International Settlements
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