My GPS doesn't show me the position of the masts near my home airfield.
Granted this is a limitation of the data which is in the GPS, and not of the GPS itself, but if I'm flying in the kind of weather we are talking about here, and the cloudbase is low enough that I can't be 100% certain I'm above those masts, then I'm going to be pretty damn sure I'm nowhere near them - and that needs a navigation method which represents the masts.
Of course, it might be that I review a chart, and decide that I will fly my whole detail to the north of a particular river (knowing that the masts are to the south of the river). I might then get airborne, and use GPS to back up my visual navigation and ensure I stay north of the river.....
Once again, GPS is a very valuable tool, and anyone who says it shouldn't be used needs to learn to move with the times. But once again, anyone who thinks it is the answer to all their problems is going to find themselves in trouble unless luck is on their side.
FFF
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