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HERFINDAHL-HIRSHMAN INDEX: A measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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ASSUMPTIONS, PRODUCTION POSSIBILITIES

The four key assumptions underlying production possibilities analysis are: (1) resources are used to produce one or both of only two goods, (2) the quantities of the resources do not change, (3) technology and production techniques do not change, and (4) resources are used in a technically efficient way.

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APLS

BLUE PLACIDOLA
[What's This?]

Today, you are likely to spend a great deal of time wandering around the shopping mall seeking to buy either blue cotton balls or a genuine down-filled pillow. Be on the lookout for crowded shopping malls.
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This isn't me! What am I?

Mark Twain said "I wonder how much it would take to buy soap buble if there was only one in the world."
"Genius is an infinite capacity for taking pains. "

-- Jane Ellis Hopkins, writer

BPEA
Brookings Papers on Economic Activity
A PEDestrian's Guide
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