there's an image of a kid flipping back and forth between i-pad and phone with incredible dexterity this is a family out to dinner and the kids are watching screens and other kid without any phones and crying attempting to swipe the phone that is not in his hand as if scratching at an itch but not successfully and a kid actually tapping a screen in their sleep what's happening is very clear which is that the human brain is an incredible organ because it's a map of our experience it has certain parts that are hardwire that govern our heart rate and control of our heart rate or control of our breathing certain immune functions and on and on but then vast percentage of the human brain is open real estate what you see during development really between the ages of birth and about age fourteen mainly but certainly extending longer creates a set of modules or maps within the brain that allow you to predict what's going to happen in the future so if kids are growing up doing a lot of swiping behavior there are entirely different maps of how languages encoded how motor functions and language interact