Did you see the reference to 'autistic savant' up above? That was the example referenced. And even if someone does work/practice some, if the effort is minimal relative to other people ('normal' people, or what not), does it diminish the ability because they didn't "work hard" for it?

personally, I'm no savant, but as a child I really didn't have to work hard at anything in school. I was pushed up a grade, and was still at the top of that class, and bored, for years. i put in basically no effort in to any schooling for years, and was still, generally, way ahead of many other students who, looking back now, were struggling (this was in the day when students could be 'held back' to repeat a grade - I don't think that's done much today?).

i have learned plenty of skills, and some took years, and it's never ending. but some came - essentially - effortlessly (or appeared effortless relative to peers' efforts).