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October 15, 2026 

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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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SIMPLE TAX MULTIPLIER

A measure of the change in aggregate production caused by changes in a government taxes that shocks the macroeconomy, when consumption is the ONLY induced expenditure. The simple tax multiplier is the negative marginal propensity to consume times the inverse of one minus the marginal propensity to consume. A related multiplier is the simple expenditures multiplier, which measures the change in aggregate production caused by changes in an autonomous expenditure.

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APLS

RED AGGRESSERINE
[What's This?]

Today, you are likely to spend a great deal of time at a garage sale looking to buy either a large, stuffed giraffe or a birthday greeting card for your aunt. Be on the lookout for attractive cable television service repair people.
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This isn't me! What am I?

Lombard Street is London's equivalent of New York's Wall Street.
"Give the American people a good cause, and there's nothing they can't lick. "

-- John Wayne, actor

BPEA
Brookings Papers on Economic Activity
A PEDestrian's Guide
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