It's worth reading some of the papers where they discuss performance at counting tasks among the Pirahã. IIRC there were some people who seemed understood there

It's worth reading some of the papers where they discuss performance at counting tasks among the Pirahã. IIRC there were some people who seemed understood there was a difference in the quantity but struggled to quantify or articulate it; and there were other people who didn't struggle to articulate it at all, they just didn't bother with it or think it important. "Number as a cognitive technology: Evidence from Pirahã language and cognition" http://www.sciencedirect.com/science/article/pii/S0010027708001042 http://www.sciencedirect.com/science/article/pii/S0010027708...