I'm not sure why we are still debating this.

I'm not being sarcastic, since it's been resolved to my satisfaction.

Nature (in the sense of something inherent in the person) is the initial driver of extreme talent.

If the potential isn't there, it can't be actualized (absent the use of technology to augment the actualization).

However, the nature has to be nurtured in a particular manner or it will not be actualized.