Cal Newport's actually made a career out of debunking the "simply wired differently" hypothesis: http://calnewport.com/blog/.
While structural differences in neurology might grant an edge at the very peak of performance (compare to Michael Phelps and his extra-long torso), the vast majority of performance differences come down to effective training. We're talking 9-9.9x out of the "super-developer's" 10x.
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Cal Newport's actually made a career out of debunking the "simply wired differently" hypothesis: http://calnewport.com/blog/.
While structural differences in neurology might grant an edge at the very peak of performance (compare to Michael Phelps and his extra-long torso), the vast majority of performance differences come down to effective training. We're talking 9-9.9x out of the "super-developer's" 10x.