Ah!! Quick! He's getting to close to the secret rules that run the universe, like where the second sock in the dryer goes! He's on to us!

Joking aside, I both love that you asked this, and the responses that are posted. So much of the world we take at face value, "Because that's just how it is." I love the moment when a person decides to stop accepting it as a given and asks why a thing is. At worst the world becomes a little weirder, as the limits of human understanding become a little clearer, but often I've found you get a fun little bit of knowledge that hardly anyone bothers to go for.

Kudos!