Philly Fed President Patrick Harker was a model central banker. He never made waves, was thoughtful and always professional. He's retiring at month-end and is out with some comments:It's still possible the Fed can cut later this yearUncertainties make it very hard to divine monetary policy outlookWorries that the quality of economic data is erodingWe're increasingly flying blind on dataYou tend to get a bit more candor at this point in a central banker's career but obviously he will no longer have any say. His successor will get a vote next year. This article was written by Adam Button at www.forexlive.com.