Attention is the fundamental instrument we use for learning, thinking, communicating, deciding, yet neither parents nor schools spend any time helping young people learn how to manage information streams and control the ways they deploy their attention.

The idea that your spouse or your parents don't know where you are at all times may be part of the past. Is that good or bad? Will that make for better marriages or worse marriages? I don't know.

Advertising in the past has been predicated on a mass market and a captive audience.

People's social networks do not consist only of people they see face to face. In fact, social networks have been extending because of artificial media since the printing press and the telephone.