“The existence of a universal aesthetic psychology has been suggested, not only experimentally, but by the fact that the arts travel outside their local contexts so easily. Displays of virtuosity make audiences’ hair stand on end, regardless of their specific cultural context. It’s no surprise this is a universal aspect of human nature: over thousands of generations, hunter-gatherer bands that exercised dexterity, and encouraged it by admiring it, would have survived better than their less skilful cousins against predators and the rigours of a hostile environment.”