Learning To Count

I am sure you have heard the old joke:

There are 10 types of people in the world: Those who understand binary, and those who don't.

I was trying to explain the joke to a girl at work, and found out that I am one of the ones who don't. After she left, probably giggling at my discomposure, I decided to try to write down the binary numbers from zero to ten, as it were. It only took me twenty minutes to get it right!