March 23, 2018 

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ECONOMIC THINKING: A way of looking at, and analyzing, the way the world works by comparing the costs of an action with the benefits generated. Economic thinking arises from scarcity, which exists because wants and needs and unlimited but resources are limited. This means virtually all actions incur an opportunity cost. Identifying the cost of an action, no matter how hidden or subtle it may be, is the essence of economic thinking.

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AE LINE: Another term for aggregate expenditure line, which is a line representing the relation between aggregate expenditures and gross domestic product used in the Keynesian cross. The aggregate expenditure line is obtained by adding investment expenditures, government purchases, and net exports to the consumption line. As such, the slope of the aggregate expenditure line is largely based on the slope of the consumption line (which is the marginal propensity to consume), with adjustments coming from the marginal propensity to invest, the marginal propensity for government purchases, and the marginal propensity to import. The intersection of the aggregate expenditures line and the 45-degree line identifies the equilibrium level of output in the Keynesian cross.

     See also | aggregate expenditures | gross domestic product | Keynesian cross | consumption expenditures | investment expenditures | government purchases | net exports | consumption line | marginal propensity to consume | marginal propensity to invest | marginal propensity for government purchases | marginal propensity to import | 45-degree line | Keynesian economics | aggregate demand |

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The total (or aggregate) real production of final goods and services available in the domestic economy at a range of price levels, during a given time period. Aggregate supply, usually abbreviated AS, is two different relations between price level and real production--long run and short run. With long-run aggregate supply, prices and wages are flexible and all markets are in equilibrium. With short-run aggregate supply some prices and wage are NOT flexible and some markets are NOT in equilibrium. This is one half of the AS-AD (aggregate market) analysis. The other half is aggregate demand.

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Today, you are likely to spend a great deal of time searching the newspaper want ads wanting to buy either a birthday gift for your uncle or a pair of red and purple designer socks. Be on the lookout for mail order catalogs with hidden messages.
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