There is no point asking questions that demand “black” or “white” answers. The truth lies in neither of the two options. We would like to offer some advice on method. First of all it is necessary (and useful) to learn to use a map, which is in any case the foundation of hiking in general.
A GPS cannot be 100% reliable: we are talking about electronic equipment that works under precise conditions of temperature, battery charge and reception of the satellites' GPS signal. You need to know how to use them properly, and they are not always “friendly”... they can confuse us, lead us astray or make us waste time.
A map is a reliable tool, but not always an easy one to consult. Learning to read the symbols takes experience and sensitivity. Getting yourself out of trouble with a map when you are lost in a wood is not always easy, when it is impossible to see the horizon and fix trigonometric reference points.
We would like to offer some advice on method. First of all it is necessary (and useful) to learn to use a map, which is in any case the foundation of hiking in general.
You learn to recognise the symbols, the shades of colour, the meaning of the lines. Then you learn map reading and orientation. Using a GPS is simpler, and simpler still for those who already know how to use a map.
It has to be said, however, that there is a third tool nobody ever talks about, and that is an instinctive sense of direction. It is not easy to tell who is usefully blessed with it. It is true that experience helps; even though instinct is not a “sure” tool, it can often save our lives more than any map, GPS or other more advanced technology.
Is a GPS or a detailed map better?
Both are perfectly fine, seasoned with the skilful ability that comes from experience and with the good sense never to venture into places beyond our strength and our abilities.
There is no GPS and no Map that will get us out of trouble when things go wrong.