“Each generation of children confronts a new environment,” she explained, “and their brains are particularly good at learning and thriving in that environment. Think of the children of immigrants, or four-year-olds confronted with an iPhone. Children don’t invent these new tools, they don’t create the new environment, but in every generation they build the kind of brain that can best thrive in it. Childhood is the species’ ways of injecting noise into the system of cultural evolution.” “Noise,” of course, is in this context another word for “entropy.”
