So much hand-wringing in these comments. Let me try to help: the advent society-wide timekeeping mechanims with more (sundials) and more (mechanical clocks) and more (atomic clocks) accuracy fomented the emergence of habits and patterns of interactions unimaginable by humans and their societies before these facilities became widely available. Some of these emergent properties conveyed advantages that aided conquest and empire building, not unlike Jared Diamond's "Guns, Germs, and Steel".

It's kind of like watching an action movie from the 1980s with a modern teenager and trying to explain why the hero/victim didn't simply use their mobile phone to text or call for help. Those with the facility can literally not fathom life without it, except as some kind of vague thought experiment.