In my layman’s view it’s obviously a balance, like all things. Look at the top athletes - Michael Phelps has more upper body than he does lower. The best UFC fighters often have insane wingspan for their height (and therefore reach for punches). Usain Bolt is not a short man. Certain people are tuned for certain things. Then whether they combine that baseline with total obsession and hard work is up to them.

The mental sphere is where it becomes super vague for me. Did John Von Neumann just study really hard? The anecdotes told about Feigenbaum of Chaos Theory make him sound like a savant among savants. They just kept that childlike curiosity? Doesn’t make any sense to me. It seems they are tuned differently.