(This is the final part of a five-part series called Interconnected, detailing how technology is changing humanity.)When you were a child, did you have limits on the amount of TV you could watch? Or video or computer games you could play? Too much of that stuff "would rot your brain", right? It was universally accepted that too much screen time would hinder kids development.But is that still true in a world where children spent more than a year working, playing and learning online? In a world where my child will fall behind if she doesn't learn how to use a touchscreen? In a world where much of the rest of their lives will be spent online, how connected should children be?GUEST: Dr. Nusheen Ameenuddin, chair of The American Academy of Pediatrics Council on Communications and Media, assistant professor of pediatrics at the Mayo Clinic.