[noahc]

Of course there are biological limits that training can’t surmount.

My point, more broadly, is that the idea that, “I can’t do that....genetics!” is misplaced defeatism.

[mannykannot]

For a majority of aspiring athletes, it is probably better for them to accept sooner rather than later that they cannot get to the first rank - and most of them do. Unrealistic expectations in either direction do not help (though a bias to optimism is probably a good thing.)

But, as I suggested earlier, I don't think the issue of athletic performance has much to say about creativity, which is the topic of this article. Indubitable's answer of Ramanujan is a much more relevant reply to your question, but where does that leave us? His example does not give us a reason to give up on creativity, which goes to show that the question doesn't address the issue.