Please check me to see if I am correct, but if I got the show right, they were not following a GPS. Ms Kim said, something like. "I saw this distinct road on the map," and evidently, because it was "distinct," felt it would be suitable to follow. If that indeed was her decision, it wouldn't matter on what medium the "road" was displayed - her decision to follow it was the critical factor.

I won't even comment on your differential wiring comment. I have associated with far too many superb female navigators, both on land and at sea. I have also been around some guys who could not find their way out of a broom closet if they had a GPS and a painted red line, with a million dollars on the other side of the door.