What are the odds that short people never work hard enough to become good swimmers, for example? I cited K. Anders Ericsson's publication list in my first comm

What are the odds that short people never work hard enough to become good swimmers, for example? I cited K. Anders Ericsson's publication list in my first comment. He specifically mentions physical stature (after growth to adult height is completed) as an exceptional case of a prerequisite to top-level performance in some sports domains that is not malleable to practice. Even at that, I have been impressed during my lifetime, which appears to be longer than yours, at what body types that used to be considered "impossible" for top performance in some sports have since been vindicated as the body types of champions. For example, before Usain Bolt set Olympic records after training very hard, he was believed to be too tall to be a successful sprinter. http://www.slate.com/articles/news_and_politics/recycled/2009/08/taking_sprinting_to_new_heights.html http://www.slate.com/articles/news_and_politics/recycled/200... The way to find out what body types strictly limit sports performance is to have people of all body types come out for the sport and engage in deliberate practice, and see what happens. The same principle generalizes to performance that mostly relies on brain activity, especially because we have even less information about how brains differ "inherently," and we know the brain is the organ more than any other human organ that responds to its environment. See also the photograph of the identical twins Otto and Ewald for malleability of body type. http://www.marksdailyapple.com/control-gene-expression/#axzz2UhOexA7F http://www.marksdailyapple.com/control-gene-expression/#axzz... This photograph is often shown to students at the University of Minnesota, a center for studies of identical twins, in their introductory courses on genetics.