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ASSUMPTIONS, CLASSICAL ECONOMICS: Classical economics, especially as directed toward macroeconomics, relies on three key assumptions--flexible prices, Say's law, and saving-investment equality. Flexible prices ensure that markets adjust to equilibrium and eliminate shortages and surpluses. Say's law states that supply creates its own demand and means that enough income is generated by production to purchase the resulting production. The saving-investment equality ensures that any income leaked from consumption into saving is replaced by an equal amount of investment. Although of questionable realism, these three assumptions imply that the economy would operate at full employment.
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AUTONOMOUS EXPENDITURES Expenditures on aggregate production by the four macroeconomic sectors that do not depend on income or production (especially national income or even gross domestic product). That is, changes in income do not generate changes in these expenditures. Each of the four aggregate expenditures--consumption, investment expenditures, government purchases, and net exports--have an autonomous component. Autonomous expenditures are affected by the ceteris paribus aggregate expenditures determinants and are measured by the intercept term of the aggregate expenditures line. The alternative to autonomous expenditures are induced expenditures, expenditures which do depend on income.
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time wandering around the shopping mall wanting to buy either arch supports for your shoes or an AC adapter that works with your MPG player. Be on the lookout for slow moving vehicles with darkened windows.
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The standard "debt" notation I.O.U. does not mean "I owe you," but actually stands for "I owe unto..."
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"New ideas pass through three periods: - It can't be done. - It probably can be done, but it's not worth doing. - I knew it was a good idea all along!" -- Arthur C. Clarke
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AEA
American Economic Association
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