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TANSTAAFL: A rather cumbersome and usually hard to remember acronym for the expression "There ain't no such thing as a free lunch. This is a favorite saving of many economists because it highlights, albeit in a grammatically questionable manner, the fundamental problem of scarcity. The phrase serves to emphasize that seemingly "free" lunches are not really free. While they might be free to the customer, someone must pay, that is, incur an opportunity cost of foregone production. The lunch eaten by one person cannot be eaten by another.

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DERIVED DEMAND

The notion that the demand for a factor of production, or an input used in the production of a good, depends on the demand for the output being produced. This concept highlights the two key aspects of factor demand. One is that factor demand depends on the value of the good being produced. Inputs that produce more valuable outputs are themselves more highly valued. Two is that factor demand depends on the productivity of the input. Inputs that produce more output are themselves more highly valued.

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GREEN LOGIGUIN
[What's This?]

Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway trying to buy either a birthday gift for your aunt or a pair of leather sandals that won't cause blisters. Be on the lookout for strangers with large satchels of used undergarments.
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This isn't me! What am I?

Lewis Carroll, the author of Alice in Wonderland, was the pseudonym of Charles Dodgson, an accomplished mathematician and economist.
"You miss 100% of the shots you never take. "

-- Wayne Gretzky, hockey player

ANOVA
Analysis of Variance
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