Sometimes I like to imagine what life would have been like before modern time keeping. Sure you were still a serf suffering under capitalism but imagine your most specific scheduling being "sunrise" or "high noon". No stressing about leaving your house by a certain time to commute, no worrying about being reprimanded for 2 minutes tardiness, no packed full schedule of back to back meetings... Even if you are doing hard manual labor, I imagine the ambient stress levels would be quite different.