Given today's level of obsession required to become #1 in any professional sport, I wonder what kind will be needed to be #1 in, say, 25 years. Have we reached some sort of pinnacle? I doubt it, but we probably thought these kind of athletes 30 years ago were already as perfectionists as they could be. P.S. I mean obsession in regards to hours devoted to training, practicing, building etc, not as a description of their personality, although it probably is present there in varying quantities.