I had that experience, too. I epected whys; I had great answers to some classics: it never happened. DS8 also watched a good amount of TV at that age, and was pretty headstrong. He'd do a lot of strange things and seek out a lot of factual information.
At some point it became apparent that he was almost hard-wired for the scientific method, and his core m.o. is to test and experiment and discover answers. He has a strong need to figure things out himself even to his own detriment. It's like life is a novel and any bestowed wisdom is skipping pages.
I don't know if it's because he got a lot of questions answered to his questions. Or a lot of praise for making connections himself. Or something innate. But I know now that he constantly asks "Why?" It's just to himself and it drives him. Though frustrating at times, I see it as the very trait of intellectual curiosity that I wished for him to have even before he was born.
