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Otherwise, trade would be a zero sum game at best, and almost certainly a negative sum game, it would seem.  You would also have to have a way to calculate investment and other capital flows and the returns thereupon.

"It is not necessary to have hope in order to persevere."
by ARGeezer (ARGeezer a in a circle eurotrib daught com) on Sun Jul 20th, 2008 at 01:38:15 PM EST
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