The stupid answer is that it's easier to add 1/2 and 1/4 than it is 32/64 and 16/64. Keep in mind this is the kind of measurement system that might evolve in th

The stupid answer is that it's easier to add 1/2 and 1/4 than it is 32/64 and 16/64. Keep in mind this is the kind of measurement system that might evolve in the time before most people had a formal education.