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April 9, 2026 

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REALISM OF PERFECT COMPETITION: Perfect competition is an idealized market structure that does NOT exist in the real world. While some real world industries might come relatively close to a one or two of the four key characteristics of perfect competition, none matches all four sufficiently that we can declare a perfectly competitively industry. Some industries come close on the large number of small firms and the identical product characteristics. A few industries have relatively good, although not perfect, information about prices and technology. However, almost all industries fall far short of the perfect mobility characteristics.

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AVERAGE PRODUCT AND MARGINAL PRODUCT

A mathematical connection between average product and marginal product stating that the change in the average product depends on a comparison between the average product and marginal product. If marginal product is less than average product, then average product declines. If marginal product is greater than average product, then average product rises. If marginal product is equal to average product, then average product does not change.

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PINK FADFLY
[What's This?]

Today, you are likely to spend a great deal of time at a garage sale wanting to buy either a hepa filter for your furnace or a wall poster commemorating next Thursday. Be on the lookout for florescent light bulbs that hum folk songs from the sixties.
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This isn't me! What am I?

The New York Stock Exchange was established by a group of investors in New York City in 1817 under a buttonwood tree at the end of a little road named Wall Street.
"It is not the mountain we conquer, but ourselves. "

-- Sir Edmund Hillary, Explorer

BCD
Business Cycle Development
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