[effed3]

I don't have read jaines. To me the language was different yes, but the mind is another thing, but the two are cleary related. I think humans need (and create) more concepts, more complex/different idea, to grasp/describe a more complex world around, but the mind is equally capable now as 50k-years ago.

Probably in the past minds can contemplate things we are not more aware today, who know? is not all about rational and scientific thinking, is not more or less advanced, is simply different, and in the past humans needed a quite different set of ideas and tools than today.

Just travel to Papua-NewGuinea and check with some tribe in a lost valley, straigh from Neolythic, some does not have a concept of "3", but children can learn arithmetic as everyone else, they can contemplate every concept we have, given the right path.