> The reason we're stuck with the decimal system is that many centurys ago our
> ancestors mistakenly thought that God had given us ten fingers as an
> indication that we should use base 10. In actuality God really intended for
> us to think of each hand as one nibble of an 8 bit byte with the four fingers
> representing the bits and the thumb as a carry bit.

> Why would there be two carrys?  Maybe the left thumb is
> the borrow, and the right thumb is the carry.

The right thumb is the half-carry bit.  Though if there's no use for base 10
I suppose half-carry isn't all that useful...

Actually, I personally usually use my hands to count to 100: the ten digits
have values:
  10 10 10 10   50       5    1  1  1  1