"Why? Why? Why?" Children ask.

In my eyes, my dad knows everything. As a child, I always ask him "Why?" about anything that crossed my mind; and I don't remember a time when he didn't treat my questions seriously.  He's the first teacher who showed me how to treat little kids with respect.  I think I read a research somewhere saying that on average children ask at least 70 questions per day. (Although I doubt it...the number