The thing is, we just use whole numbers. If you get under 1, then you move down by one SI prefix et voilà, you have whole numbers again
I’ve never thought of counting on fingers as a good reason for using it for units. But since our numeric system is base 10 (likely because of having 10 fingers indeed), it’s easier to have our unit systems as base 10 too. If we all learned to think in base 12 from ground up, having base 12 units would make a lot more sense too
The thing is, we just use whole numbers. If you get under 1, then you move down by one SI prefix et voilà, you have whole numbers again
I’ve never thought of counting on fingers as a good reason for using it for units. But since our numeric system is base 10 (likely because of having 10 fingers indeed), it’s easier to have our unit systems as base 10 too. If we all learned to think in base 12 from ground up, having base 12 units would make a lot more sense too