[OvidNaso]

But so are you and I. That's how you wrote this reply.

[ClumsyPilot]

Preposterous- cavemen had no language but they could reason, think and learn.

A child learns how to eat solid food and how to walk. That a square peg fits into a square hole. This has nothing to do with language.

people who deaf and mute and cannot read can still reason and solve problems.

[baq]

> cavemen had no language

big if true

[rtkwe]

It's one of those things that's basically impossible to study because language leaves no signs until you get to writing.