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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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AVERAGE REVENUE PRODUCT AND MARGINAL REVENUE PRODUCT

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

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Today, you are likely to spend a great deal of time wandering around the downtown area wanting to buy either a genuine down-filled pillow or one of those "hang in there" kitty cat posters. Be on the lookout for a thesaurus filled with typos.
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The 1909 Lincoln penny was the first U.S. coin with the likeness of a U.S. President.
"The only thing that will stop you from fulfilling your dreams is you. "

-- Tom Bradley, former Los Angeles mayor

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