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September 1, 2026 

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A PRIORI: A presumption made before an analysis is undertaken, often based on experiences, beliefs, or deductions from seemingly self-evident propositions about how the world works. This is a Latin for assumption or axiom. A similar sounding, but opposite term is a posteriori, which is derived from observation or facts. For example, in the study of economics of crime you might assume, a priori, that people are basically "good", because that just seems to be part of human nature, and conclude, a posteriori, that people are more likely to commit crimes when the threat of capture and conviction is lower.

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TOTAL REVENUE, PERFECT COMPETITION

The revenue received by a perfectly competitive firm for the sale of its output. Total revenue is one two bits of information a perfectly competitive firm needs to calculate economic profit, the other is total cost. In general, total revenue is the price times quantity--the price received for selling a good times the quantity of the good sold at that price. For a perfectly competitive firm, which receives a single unchanging price for all output sold, the calculation is relatively easy. Two other revenue measures directly related to total revenue are average revenue and marginal revenue. Total revenue is often depicted as a total revenue curve.

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BLUE PLACIDOLA
[What's This?]

Today, you are likely to spend a great deal of time at an auction wanting to buy either a coffee table shaped like the state of Florida or storage boxes for your summer clothes. Be on the lookout for attractive cable television service repair people.
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This isn't me! What am I?

A thousand years before metal coins were developed, clay tablet "checks" were used as money by the Babylonians.
"Success is the child of audacity. "

-- Benjamin Disraeli, British statesman

DARA
Decreasing Absolute Risk Aversion
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