I think you are over-simplifying the situation. Malcom Gladwell's book Outliers popularized the notion that a person needs on average 10,000 hours of practice t

I think you are over-simplifying the situation. Malcom Gladwell's book Outliers popularized the notion that a person needs on average 10,000 hours of practice to truly master a given task. A lot of people took this to mean, "if you put in 10,000 hours of practice, you will become a master." This is not true. The 10,000 hours of practice is necessary, but not sufficient. The practice has to be _intentional_, guided, goal-oriented practice. Not just playing the same song or making the same shot over and over.