And when was the last time you counted something on your fingers that was more than 3? Also, quoting parent's link: > It is possible to count to 12 with the t

And when was the last time you counted something on your fingers that was more than 3? Also, quoting parent's link: > It is possible to count to 12 with the thumb acting as a pointer, touching each finger bone in turn. A traditional finger counting system still in use in many regions of Asia works in this way, and could help to explain the occurrence of numeral systems based on 12 and 60 besides those based on 10, 20 and 5. In this system, the one (usually right) hand counts repeatedly to 12, displaying the number of iterations on the other (usually left), until five dozens, i. e. the 60, are full.