The Mayans used vigesimal (base 20), which you can count to on one hand.
It does not matter! It would work no matter how many fingers any creature have!
12 base system is great for trading. You have easy splitting: 1/12 1/6 1/3 1/2 2/3 etc.
Mayans base 20.
So, given a correlation between items of clothing and numeric base system, was there ever a culture that used base 21?
Wasn't the old English currency Pounds, shillings and pence based on that?
Not that I'm old enough to remember you understand.....
Plus, as my mum pointed out no foreign traveller to Britain could work it out, so we ripped them off mercilessly.Prior to decimalization the pound was divided into twenty shillings and each shilling was divided into twelve pennies or pence. Although those divisions may seem odd, in fact having a pound divided into 240 equal parts does mean it can be exactly divided into halves, thirds, quarters, fifths, sixths, eighths, tenths, twelfths, fifteenths, sixteenths, twentieths, twenty-fourths, thirtieths, fortieths, forty-eightieths, sixtieths, eightieths, and one-hundred-and-twentieths. A decimal system allows precise division only into halves, quarters, fifths, tenths, twentieths, twenty-fifths, and fiftieths.
It does not matter! It would work no matter how many fingers any creature have!
12 base system is great for trading. You have easy splitting: 1/12 1/6 1/3 1/2 2/3 etc.