The fact that something can be nurtured does not mean it is not linked to giftedness. If you'd like to explore the topic further, here are a couple of links:

http://www.google.com/#tbm=bks&tbo=1&q=("Persistence")+(gifted+OR+giftedness)
http://scholar.google.com/scholar?q=%28%22Persistence%22%29+%28gifted+OR+giftedness%29&nfpr=1

Striving to increase my rate of flow, and fight forum gloopiness. sick