I disagree with this analysis. Socially isolated humans aren’t isolated, they still have nature to imitate. There’s no such thing as a human with no training data. We gather training data our whole life, possibly from the womb. Even in an isolated group, we still have others of the group to imitate, who in turn have ancestors, and again animals and natural phenomena. I would argue that all creativity is precisely compositing things we’ve seen or heard before.