Cohen also interviewed professor David Card, saying that he's done "groundbreaking research on the effect of the minimum wage." Literally hundreds of studies show that increases in the minimum wage cause unemployment for the least-skilled worker, a group dominated by teenagers, particularly black teenagers. But Card's study asserts that increases in minimum wage actually increase employment. Besides the fact that reviews of his study show flawed statistical techniques, that assertion doesn't even pass the smell test. If it did, then whenever there's high unemployment, anywhere in the world, governments could eliminate it by mandating higher minimum wages.

Robert Reich, President Bill Clinton's labor secretary, said that economists who question free market theories really "want to speak to the reality of our time." That's incredible. Reality doesn't depend on whether it's 1907 or 2007. Reich probably thinks the reality of the laws of demand depends on what year it is. I wonder whether he thinks the reality of the laws of gravity does as well.

The ideas expressed by economists interviewed by Cohen, while out of the mainstream of a large majority of economists, are solidly in the mainstream of mankind's traditional vision. Throughout history, the right to pursue one's goals in a peaceable, voluntary manner, without direction, control and coercion, has won a hostile reception. There's little older in history than the idea that some should give orders and others obey.

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Walter E. Williams is a professor of economics at George Mason University.