Thank you everyone for contributing to this thread. It is such interesting reading!

I agree that it is obvious that there is more THERE there. From birth, my DS was like that. He came out alert and "knowing." Although I have talked to people who's kids were working with letters and talking early like him whose kids turned out not to be gifted, there is much more going on here.

Recall is a big one, and his humor is blossoming overnight. Yesterday, he picked up some sheet music and was intensely studying it, like he does books and other printed materials. He is different. It is clear.

Thanks so much for all of your insight.