My argument is pretty simple: We are living through the largest expansion in expressive capability in the history of the human race. The effect of new capabilities destabilizing existing behaviors has been very profound for really major communications changes -- as with, say, the printing press and the telephone. Given the enormity of the change we're living through -- the first group-oriented medium in history -- change is now coming to every place where society relies on groups to get work done, which is almost everywhere.