0: Explain it like I'm 5.
1: Okay, I can try... eh hem... "Hey Sweetie! That's a great question and I'm glad you're thinking about things like this, but there's a lot of things you're not aware of right now that would help you understand the answer. I'll explain it more when you get older, I promise. Now why don't you go play on the swings. I'll be here on the bench while you do, okay?"
@tinker 0: Why?