When economist Alfred Kahn spearheaded the deregulation of the airline and trucking industries during the Carter administration, both were sclerotic bureaucracy-bound disasters well past their useful heyday. Few could foresee the benefits, then only theoretical. As a result of deregulation, airfares have dropped, more airlines opened, and air travel has become commonplace. (Remember the Pan Am ads with passengers in business clothing?) No one mourns the demise of the rate-setting functions of the Civil Aeronautics Board or Interstate Commerce Commission.