But the interesting question is how do we now teach people to become "un-lost?" I can't recall ever being taught or learning such a procedure
I would be surprised if a student was not taught basic lost procedure, whilst I would agree that a call to D&D is abvisable, Sod's law says that at some time those who rely on electronics will at some time have an electrical failure, at that point they not only get lost because the GPS has failed but they cannot call on the radio because that has failed as well, this is when having learnt the basics come into their own!