Human performances varies across a considerable scale – whilst Socialist ideology emphasises “effort” whilst also recognising a natural “achievement” at the high-end of performance that does not leave the bulk of humanity behind. Human performance must exist on a scale that allows an “average” ability in real life that ensures the survival of the human race. Migratory humans used to “walk” thousands of miles whilst following the good weather and the shifting herds. All humans, men, women and children, as well as the young, old, and ill, would participate in these massive migrations – with the lower speed ensuring the greater survival rate over-all. Yes – those who could run fast over long or short distances had their place – but such abilities were considered peripheral to the needs of tribal survival.