It is not always by plugging away at a difficulty and sticking to it that one overcomes it; often it is by working on the one next to it. Some things and some people have to be approached obliquely, at an angle.
Obama is making a choice now that will lead to the deaths of many thousands of civilians in Afghanistan by American hands. By ordinary standards of presidents, he is a decent man. But those standards aren't good enough. He's in a position either to kill or not to kill, and he's made the decision to
Indeed, this epistemological theory of the relation between theory and experiment differs sharply from the epistemological theory of naive falsificationism.