Over 200 years ago, Adam Smith proclaimed, "I have never known much good done by those who affected to trade for the public good." Rather, he asserted that when any given business owner or consumer "intends only his own gain, [he] frequently promotes that of the society more effectually than when he really intends to promote it." Thus, in "pursuing his own interest," he will be "led by an invisible hand to promote an end which was no part of his intention."
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