Nicely written article. I would guess that using numbers started around the same time that trade (bartering) started. > Peter Watson dates the history of long

Nicely written article. I would guess that using numbers started around the same time that trade (bartering) started. > Peter Watson dates the history of long-distance commerce from circa 150,000 years ago.[0] [0] https://en.wikipedia.org/wiki/Trade#Prehistory https://en.wikipedia.org/wiki/Trade#Prehistory