NEWS last week that the Federal Reserve would keep interest rates near zero until mid-2013 was welcomed by many investors, but the bleak message about the economy still came through loud and clear. The Fed has spent several years trying to kick-start the economy with low rates and other policies, with little success. Which raises this question: Will more of the same help now? Among the doubters is Thomas M. Hoenig, the soon-to-be former president of the Federal Reserve Bank of Kansas City. Mr. Hoenig, at the helm of the Kansas City Fed for the last 20 years, has thought...