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October 16, 2026 

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LONG-RUN MARGINAL COST: The change in the long-run total cost of producing a good or service resulting from a change in the quantity of output produced. Like all marginals, long-run marginal cost is the increment in the corresponding total. What's most notable about long-run marginal cost, however, is that we are operating in the long run. Unlike the short run, in which at least one input is fixed, there are no fixed inputs in the long run. As such, there is only variable cost. This means that long-run marginal cost is the result of changes in the cost of all inputs.

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PRIVATE GOODS

Goods characterized by rival consumption and the ability to exclude nonpayers. Private goods are one of four types of goods differentiated by consumption rivalry and nonpayer excludability. The other three goods are public (nonrival consumption and nonpayers cannot be excluded), common-property (rival consumption and nonpayers cannot be excluded), and near-public (nonrival consumption and nonpayers can be excluded). Rival consumption and the ease of excluding of nonpayers means private goods can be efficiently exchanged through markets.

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A Random Walk Through Some ECONOMIC STATISTICS

A pedestrian must always be on guard during any economic excursion, especially when passing the Sylvester J. Peabody Federal Office Building here in Shady Valley. You never know when a window will burst open sending a barrage of glass slivers and economic statistics haphazardly into the street. This is usually followed by a pointy-headed economist who pokes his pointy head through the remaining shards of glass to adamantly declare that there's absolutely, positively NO RECESSION! But he'll recheck the numbers just in case there really is one. WATCH OUT! DUCK!
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BLUE PLACIDOLA
[What's This?]

Today, you are likely to spend a great deal of time at the confiscated property police auction trying to buy either a T-shirt commemorating the second moon landing or a coffee cup commemorating Thor Heyerdahl's Pacific crossing aboard the Kon-Tiki. Be on the lookout for defective microphones.
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This isn't me! What am I?

A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
"Success is more a function of consistent common sense than it is of genius. "

-- An Wang, industrialist

CRS
Constant Returns to Scale
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