I had read about savants and I find it very interesting what some people have after an accident or blow to the head, all at once for skills. There was once a woman who fell at home and got a blow to the head, after that she could speak fluent french although she never had a connection to the language.

The brain is a mystery and maybe you're right, maybe we already have all the skills in our brain that are just waiting to be unlocked. :)