James’ description of the individual response based,feedback structure domain as applied to sports training is as correct as it can be.
Hope this helps answering your previous questions as well.
Forced subdivision or not,humans are humans,and their organisms are engineered in the very same way for (before than by) survival and hopefully evolution.
If you can find a football player whose hamstrings origin behind the ear,then I have to go back and start over,and I am always willing to venture in the unknown.
I can only tell you about individuals I ran into in my life so far. None of them displayed that,and to me they looked all human…