If media arose from attempts to mark the landscape, perhaps the Nostratic language, too, arose from attempts to name the things in one's own immediate surroundings. To name the plants and animals is to know them. To know them, gives you the ability to use them, to survive. So perhaps we can say that languages of the Stone Age rose up from their region, that they grew there, like fine vintage wines. A human language is a giant memory system, an intricate creation of millions of people, over thousands of years.
Every human language has a regional version of reality.
Each language cuts reality at some different angle. Even a humble dialect takes a chip from the broken stone of reality. This brings us to the melancholy topic of the death of memory. Because across the world today, small, local languages are dying. Along with the mass extinctions in the natural world, the postindustrial epoch is bringing us mass extinctions of languages.