I guess the question is asking if, when you kill people, they'll respawn and resume their schedules as normal?
Or he's asking if there will be people marked as essential, because in Oblivion when you killed them, they'd get back up but wouldn't be in combat and would just continue with their schedule.
C'mon, stop being obstinate. You know damn well what he's talking about. If you walk into a town and kill everyone except one, will that one say "By the Nine! They're all dead! This is terrible" or will he say "Anyone looking for work should consider the Fighter's Guild."
That's not what the question says at all. "Would they return" implies nothing about one person left alive acknowledging the situation or not.