Re: I'm not even sure that half the developers read the prompts they are adding
I've made confirmation requesters with nice, helpful messages like "Selected start time is after finish time! Machine will not run at all. Press OK if this is really what you want, or Cancel to leave things as they were".
(I've probably also left the odd button lying around that does nothing but print "WIBBLE" or "BLAH", because that is just something I do as one of my program development stages.)