There are 10 types of people that understand binary - those that do and then those that have varying levels of misunderstanding on a scale of 1 - 9.

Actually I'm wondering. Sure 10 in binary is 2 in decimal. But shouldn't it be, something like there are only 1 people in the world. As one bit can be 0 or 1. we could map 0 to the one kind and 1 to the other kind of people.