Humans have had millions of years of system level optimisation (evolution) which then only needs a couple of additional years to train the wetware to operate th

Humans have had millions of years of system level optimisation (evolution) which then only needs a couple of additional years to train the wetware to operate the system for daily activity. Chess has only been around a mere 1,500 years and has had an evolutionary impact on only a very minute portion of the population. Hence it takes a few additional years to specialise a human for optimal chess performance.