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ARC ELASTICITY: The average elasticity for discrete changes in two variables, A and B. The distinguishing characteristic of arc elasticity is that percentage changes are calculated based on the average of the initial and ending values of each variable, rather than only initial values. Arc elasticity is generally calculated using the midpoint formula. Arc elasticity should be compared with point elasticity. For infinitesimally small changes in variables A and B, arc elasticity is the same as point elasticity.

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FALLACY OF DIVISION

The logical fallacy of arguing that what is true for the whole is also true for the parts. In the study of economics, this takes the form of assuming that what works for the aggregate, or macroeconomy, also works for parts of the economy, such as households or businesses. The contrasting fallacy is the fallacy of composition.

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PINK FADFLY
[What's This?]

Today, you are likely to spend a great deal of time at a flea market looking to buy either a pair of handcrafted oven mitts or a coffee table shaped like the state of Florida. Be on the lookout for jovial bank tellers.
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A thousand years before metal coins were developed, clay tablet "checks" were used as money by the Babylonians.
"It is the mark of an educated mind to be able to entertain a thought without accepting it."

-- Aristotle

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Cost Benefit Analysis
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