Look at the number of people you can potentially communicate with, and there will be a visible increase in complexity. 5000 years ago it would max out at a few

Look at the number of people you can potentially communicate with, and there will be a visible increase in complexity. 5000 years ago it would max out at a few thousand even if you were one of the rare people living in major cities. Now you could instantly communicate with billions and have to take active counter-measures to prevent the ones you don't want to communicate with from doing it.