I love this argument, seeing as "heart" has fifty different definitions, and isn't quantifiable, no one can argue against it. If you don't like an argument against "heart", you simply have to look at a different aspect of it. "Heart" could be working harder to get better, I would define that as professionalism, and self-interest personally. Give me one solid definition of "heart", and I will prepare an argument for or against it. Otherwise, it is pointless... I think heart and luck belong in the same cliche boat with battling and grit