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SHUTDOWN RULE, MONOPOLY: The marginal revenue and marginal cost approach to analyzing a monopoly firm's short-run production decision can be used to identify circumstances in which a firm minimizes losses by shutting down production in the short run. If the market price falls below average total cost, it must decide if the economic loss from producing the quantity of output that equates marginal revenue and marginal cost is more or less than the economic loss incurred with shutting down production in the short run (which is equal to total fixed cost).

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AVERAGE PHYSICAL PRODUCT

The quantity of total output produced per unit of a variable input, holding all other inputs fixed. Average physical product, usually abbreviated APP, is found by dividing total physical product by the quantity of the variable input. Average product, which more often goes by the shorter name average product (AP), is one of two measures derived from total physical product. The other is marginal physical product.

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"If anything terrifies me, I must try to conquer it. "

-- Francis Charles Chichester, yachtsman, aviator

Conserving Our NATURAL RESOURCES

Mona Mallard Duct Tape Industries, the world's a leading producer of duct tape (that all-purpose, omni-present, shiny gray tape), is located right here in Shady Valley. Perhaps you've heard that they recently developed a new-fangled form of duct tape that's certain to revolutionize duct tape as we know it. This revolutionary development has, however, created a "situation" that we, pedestrian explorers of the economy, should consider. Mona Mallard's new duct tape uses "quagliminium," a relatively limited mineral found only in the quaint and courteous Republic of Northwest Queoldiola. Prior to this duct tape development, quagliminium had only one use, as lubricant for OmniStraight shoestring straighteners. The Northwest Queoldiolan supplies were sufficient to lubricate shoestring straighteners well into the year 3000. As a duct tape input, though, quagliminium deposits will be exhausted in a scant 50 years. Should we, could we, allow Mona Mallard to exhaust the supply of quagliminium? If they do, how will future generations lubricate their shoestring straighteners? Should we call for a moratorium on quagliminium use?
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BEIGE MUNDORTLE
[What's This?]

Today, you are likely to spend a great deal of time searching the newspaper want ads seeking to buy either a black duffle bag with velcro closures or any book written by Isaac Asimov. Be on the lookout for poorly written technical manuals.
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This isn't me! What am I?

Ragnar Frisch and Jan Tinbergen were the 1st Nobel Prize winners in Economics in 1969.
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