And did I say a slave to Microsoft? Picture this scenario:
Students are giving an end-of-year presentation. They are a little nervous. They're using my computer to project things on the screen.
The screen goes dark, and they look alarmed: "What did we do?"
Nothing, apparently, but you know how Windows usually gives you a choice about when it's going to shut down to do some of its incessant updates, nagging you every 5 minutes until you shut it down? Not this time.
The computer shuts itself down, warning that it needs to install the updates and that that'll take a while. The poor students have to finish without showing the things that they'd planned to show. I tell them it doesn't matter, and it doesn't, of course; that wasn't their fault.
But wouldn't you think the Dark Lords of Redmond would contrive to do the updates at some time that isn't the middle of a work day?