Life without numbers
“1+1=2. Mathematics doesn’t get any more basic than this, but even 1+1 would stump the brightest minds among the Piraha tribe of the Amazon… The hunter-gatherers seem to be the only group of humans known to have no concept of numbering and counting. Not only that, but adult Piraha apparently can’t learn to count or understand the concept of numbers or numerals, even when they asked anthropologists to teach them and have been given basic math lessons for months at a time.” Stephen Strauss, Globe and Mail