Fingers and counting – constructing human realities.

Could it be that had humans had 11 fingers, our system of counting based on 10 numbers would have been based on 11 numbers instead?

I am of the belief that human fabrications (mental and physical) have been essentially based on our observed primordial experiences, innate gifts or talents and our observations of our physical world.

Thus the 10 number based counting system was created and is just an extension reflecting our natural qualities – 10 fingers.

It is thus not a ‘true’/'valid’ system of counting but one arbitrarily created by humans because that is what we knew, and because it is a quality that we all shared.

Could it be then that our knowledge is just arbitrarily and conveniently created and is rather not true in itself?

PS: my motivation for this piece arose from the number 92 – the number of elements in the periodic table as at 2011 and the basis of all material things.

I came across the number and while thing of a way to memorize it said came up with the strategy that 9 + 2 = 11 (1 more number than the basic 10 number counting system.) But then I thought: what if the basic 10 number counting system was 11? And how did humans arrive at 10?