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PERFECT COMPETITION, REALISM: 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 one or two of the four key characteristics of perfect competition, none matches all four sufficiently that they can be declared PERFECTLY competitively. 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.

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MARGINAL PROPENSITY FOR GOVERNMENT PURCHASES: The proportion of each additional dollar of national income that is used for government purchases. Or alternatively, this is the change in government purchases due to a change in national income. Abbreviated MPG, the marginal propensity for government purchases is the slope of the government purchases line used in the analysis of Keynesian economics. As such, it also plays a role in the slope of the aggregate expenditure line and the multiplier effect.

     See also | government purchases | national income | government purchases line | Keynesian economics | multiplier | aggregate expenditures line | marginal propensity to consume | marginal propensity to save | marginal propensity to import | marginal propensity to invest |


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MARGINAL PROPENSITY FOR GOVERNMENT PURCHASES, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2025. [Accessed: May 22, 2025].


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AXIOM

A basic precondition or assumption underlying a theory. Axioms are basic, unverifiable world view assumptions--including personal beliefs, political views, and cultural values--that form the foundation of a theory.

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Today, you are likely to spend a great deal of time driving to a factory outlet trying to buy either an extra large beach blanket or a large flower pot shaped like a Greek urn. Be on the lookout for letters from the Internal Revenue Service.
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Approximately three-fourths of the U.S. paper currency in circular contains traces of cocaine.
"Carpe diem! Rejoice while you are alive; enjoy the day; live life to the fullest; make the most of what you have. It is later than you think."

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NPV
Net Present Value
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