We were discussing hexadecimal counting today in computer science, and I remembered learning about number systems other than base-10 in elementary school. I thought it was rather pointless at the time; the teacher said that the reason that the whole world uses base-10 is because when you're counting, there aren't any single-digit numbers after you get to 9. That made sense to me back then, and I didn't dwell on it- I just resolved that base-10 was awesome and everything else was stupid. Now that I think about it, the teacher's reasoning makes no sense at all: there's only 0-9 because that's all we would need for base-10. Man... I'm confusing myself... what is the advantage of base-10 over something like hexadecimal? If there's no advantage, who decided that we should all use base-10? arg... head hurts...