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VOLUNTARY EXCHANGE: The process of willingly trading one item for another. The emphasis here is on "willingly." Voluntary exchanges are the heart and soul of market transactions, and should be contrasted with the "involuntary" exchanges mandated by government taxes, laws, and regulations. While involuntary government-forced exchanges play an important role in a mixed economy, economists really, really like voluntary market exchanges because they promote economic efficiency.

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MARGINAL COST

The change in total cost (or total variable cost) resulting from a change in the quantity of output produced by a firm in the short run. Marginal cost (MC) indicates how much total cost changes for a given change in the quantity of output. Because changes in total cost are matched by changes in total variable cost in the short run (total fixed cost is fixed), marginal cost is the change in either total cost or total variable cost. It is found by dividing the change in total cost (or total variable cost) by the change in output. Marginal cost is one of four cost concepts used in short-run production analysis. The other three are average total cost, average fixed cost, and average variable cost.

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Today, you are likely to spend a great deal of time driving to a factory outlet trying to buy either clothing for your kitty cats or a set of luggage without wheels. Be on the lookout for neighborhood pets, especially belligerent parrots.
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
"always remember an epitaph which is in the cemetery at Tombstone, Arizona. It says: „Here lies Jack Williams. He done his damnedest.¾ I think that is the greatest epitaph a man can have ‚ When he gives everything that is in him to do the job he has before him. That is all you can ask of him and that is what I have tried to do. "

-- Harry Truman, 33rd US president

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