Without time zones, we'd still have clocks and a universally consistent description of time, which allows for coordination. What specific problems are you think

Without time zones, we'd still have clocks and a universally consistent description of time, which allows for coordination. What specific problems are you thinking of that would harder/impossible to solve without time zones? I guess you're right that the things I describe would be possible with or without timezones. It's just that the premise of abolishing time zones is what made me question whether the heavy dependence of our lifestyle on the 'local time of the day' is justified. We could just "ignore" the local time, but some activites seem to be mutually exclusive in the same neighborhood, such as sleeping and operating loud heavy machinery. So if there's no widely accepted temporal separation, we must take spatial separation more seriously. Also, if everyone "ignored" local time globally, then time zones would become obviously meaningless :)