One of the many painful signs of the mindlessness of our times was a recent section of the Wall Street Journal, built around the theme "What's Holding Women Back in the Workplace?" Whenever some group is not equally represented in some institution or activity, the automatic response in some quarters is to assume that someone has prevented equality of outcomes. This preconception of equal outcomes requires not one speck of evidence, and defies mountains of evidence to the contrary. Even in activities where individual performances are what determine outcomes, and those performances are easily measured objectively, there is seldom anything...