One basic thing I notice is the increasing number of hunched backs in heavy internet users and gamers, especially young boys who have had rapid growth spurts and will wind up being quite tall. I find this absolutely alarming. This physical change is completely separate to the changes to fundamental brain-wiring that must also be happening. What are we losing? What will be the long-term effects? How do we monitor this; how can we catch it before it's irreversible?