I've done some research on this in the past, though I am not satisfied I have got to the bottom of things, I can tell you some stuff.
Apparently there was once a duodecimal system of counting in use, that is instead of there being numerals from 1 to 10 there were numerals from 1 to 12.
The reason for 12 having been used are multiple. 12 is the lowest number with the highest number of factors 1,2,3,4,6 and 12. Counting on fingers was done with the thumb moving from philange to philange and there are 12 philanges total on the 4 fingers.
Multiplication tables are extremely regular in base 12 (duodecimal) and a lot easier to learn.
The clock having 12 hours, the year having 12 months, the foot having 12 inches all come from this. The 360° of a circle is 12x30.
All these things are related to ancient civilizations including Egypt and Babylon but I think there is more to it. Not a lot of info available, learning all this took a lot of digging. Would be interested if anyone else has something.
you will love this lecture by randall carlson. the man is geological archeologist, self taught and has some excellent jre interviews. this is a lecuture i found the other day on 12. it should be its own post.
I needed something to listen to on my walk home. Perfect timing.
I might also point out that in english, you don't get to "teens" until thirteen. Eleven and twelve seem like they may derive from duodecimal as well. This is my opinion I have found nothing to back it up, but it is one of the things I was looking for.
(post is archived)