Bernanke's blind faith in empirical formulas over common sense is again in play with his speech today on Recent Developments in the Labor Market. In any given month, a large number of workers are being hired or are leaving their current jobs, illustrating the dynamism of the U.S. labor market. For example, between 2001 and 2007, private employers hired nearly 5 million people, on average, each month. Total separations, on average, were only slightly smaller. Taking the difference between gross hires and separations, the net monthly change in payrolls during this period was, on average, less than 100,000 jobs per...