This seems sort of a secondary cause of our unique linguistic abilities. Afaik no other animal can use recursive grammars. Certainly not to the same extent. An

This seems sort of a secondary cause of our unique linguistic abilities. Afaik no other animal can use recursive grammars. Certainly not to the same extent. Anyway this also excludes all the humans that never wrote anything, which is most of them. If anything our verbal history is our strongest and most ancient culture.