I really don't understand how scheduling fixed-time appointments became the natural order. Challenge that assumption and you'll be amazed at how it impacts life

I really don't understand how scheduling fixed-time appointments became the natural order. Challenge that assumption and you'll be amazed at how it impacts life for the better. I'm no historian, but the general gist I got is that with the shift from bespoke to industrial society came a regimenting of schedule. Could have sworn I read about this somewhere ("Peopleware"? "Lies my Teacher Told Me"?), and maybe even caught a synopsis on a book dedicated to the topic, but titles escape me right now. Might be worth looking into.