Unrelated to the question in the title, but a friend and I have often talked about this. Neither of us are in any way experts in psychology&#x2F;neurology&#x2F;etc. - we&#x27;re lowly developers.<p>However, to us it made sense that language increases the cognitive ability of the brain because it&#x27;s like memoization. We now have a symbol to represent a concept. We don&#x27;t have to re-compute it over and over again. So now we reference that symbol when we are thinking and can build upon it and attach new symbols. Without having to re-compute, so to speak, the whole underlying framework&#x2F;structure we are better able to utilize our cognitive cpu.<p>Whether that is true in any way is beyond me, but it made sense to us.