"How is it possible to morph from JFK to Barack Obama in one generation"
Oh, please. OK, JFK was a better President than Obama. There are things growing on damp read that would make a better President than Obama. On his own merits, JFK was a mediocre President whose election was brought about by a corrupt political machine. He had good hair, nice teeth, and a pretty family. He botched the Bat of Pigs (either back the anti-Castro insurgents all the damned way, or call a halt. Either choice would have been better), increased out involvement in Vietnam, started the inflation spiral that plagued every subsequent President until Reagan. If he hadn't been shot he would be remembered as nothing special.