I've been a way for a few days, and haven't time to do more than skim the myriad posts.
But one thing still puzzles me. WHY do people not want to tell D & D they're lost?
Yes, the meaning of lost can vary, depending on the circumstances. Up in North Wales, heading west, no idea exactly where I am as can see nothing but hills, but I'll know when I reach the coast and have some decent ground features. Not lost. Five miles from Heathrow and don't know really precisely where I am. Lost.
And in that second case, please explain in words of one syllable just why you wouldn't want to get on the radio and say so?