Nat: Mom how do airplanes and helicopters fly?
Me: I have no idea. (I mean I really don't. I've tried to understand it but I just don't.)
Nat: I think they have big engines that point down and spread out air really fast and that's how they do it.
Not quite right but I'm pretty impressed that a 5-year-old can come up with this entirely on her own, considering she has a scientifically inept mother. Wow, kids never cease to amaze me.