Some explanation about expectations on final formal edited work, and an analogy to explain the Professors'  requirements, which some students sometimes think is arbitrary .  This probably floated to the top of my mind with the death this week of Eddie Van Halen - but it's a lesson I've talked about for years, and draws from the time I spent working as a roadie.   See Snopes https://www.snopes.com/fact-check/brown-out/ and google it for your self.