People were expected to be in a certain place at a certain time. The notions of being 'on time' and 'running late' became much more important
This reminds me of how email has changed our workplace experience. Things that were once only a part of our actual workday are now communicated outside of work hours and even on the weekends. It has become increasingly difficult to separate our work and home lives. Email has also eliminated a cooling off period when we are upset and allowed us to dehumanize people. In the past a person that was upset would need to wait to have a conversation face to face or take the time to look up a number to call someone on the phone. In both scenarios you had to listen to the persons response. Email has allowed people to vent out whatever grievances they have without an immediate response from a second party.