Yeah... a GPS is not a substitute for awareness and your brain.
Recently I've been to some places with GPS, it is a major help, but sometimes you need to stop, see that it's leading you into a wrong path (it can be for a multitude of reasons like city works or you did something wrong before) and correct course.
Satellite view can help with this. I always use it when I'm trying to figure a route in an area I'm not familiar with; it's a lot easier to tell that something's fishy from a photo.
Recently I've been to some places with GPS, it is a major help, but sometimes you need to stop, see that it's leading you into a wrong path (it can be for a multitude of reasons like city works or you did something wrong before) and correct course.