Stephen Colbert: I remember reading an article in The New Yorker about four steps delivery for childbirth. It's been argued that it was one of the many inventions that happened throughout history that then get lost and rediscovered in loss because obviously people have been having babies for a long time. He says we don't have a great sense of how broad the norm is yet when it comes to social media, but most people worry about troubled adolescents.
Also: how is social media like a knife?