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May 9, 2026 

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ABSTRACTION: Simplifying the complexities of the real world by ignoring (hopefully) unimportant details while doing economic analysis. Abstraction is often criticized because it's, well, it's JUST NOT REALISTIC. However, when done correctly (ignoring things that JUST DON'T MATTER), then the pursuit of knowledge is greatly enhanced by abstraction. For example, when travelling cross country along a high-speed interstate highway, a paper road map is a handy tool. It shows towns and cities along the way, the major intersections, rest stop locations, and other important points of interest. However, it ignores unimportant details. It doesn't realistically show the location of every tree, bush, or blade of grass. Why bother? This information won't enhance your road trip.

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MARGINAL FACTOR COST

The change in total factor cost resulting from a change in the quantity of factor input employed by a firm. Marginal factor cost, abbreviated MFC, indicates how total factor cost changes with the employment of one more input. It is found by dividing the change in total factor cost by the change in the quantity of input used. Marginal factor cost is compared with marginal revenue product to identify the profit-maximizing quantity of input to hire.

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APLS

RED AGGRESSERINE
[What's This?]

Today, you are likely to spend a great deal of time touring the new suburban shopping complex seeking to buy either a case for your designer sunglasses or arch supports for your shoes. Be on the lookout for spoiled cheese hiding under your bed hatching conspiracies against humanity.
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This isn't me! What am I?

In the early 1900s around 300 automobile companies operated in the United States.
"Enthusiasm is the greatest asset in the world. It beats money and power and influence. It is no more or less than faith in action. "

-- Henry Chester, Writer

PVR
Profit Volume Ratio
A PEDestrian's Guide
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