Should be piss easy if you followed the instructions, but people will just start connecting parts because “how hard can it be”. Then they’ll complain about how it’s broken and how the instructions were bad lol.
I’ve been on night watch. Yes you aren’t as alert when you’re sleepy but that’s just something you have to deal with.
It’s interesting theory that there’s evolutionary nocturnal humans but I’m not sure how concrete that is. In any case, humans being diurnal isn’t contingent on absolutely everyone being like that. It’s just the default with most being like that.