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by Kevin M. Laing, DDS - ODA President
ODA Today

Economist Milton Friedman and Science Fiction Author Robert Heinlein were both fond of using the expression “There ain’t no such thing as a free lunch,” (TANSTAAFL) as a way to express the need to be aware of the cost associated with everything we do. In economics this is called opportunity cost. The quote refers to the practice that saloon owners used to lure in clientele by offering food at lunchtime hoping that the person would…

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