This is obviously only true till you run out of power or have a malfunction like we did in a previous post : Got the grey matter? Or even worse, all the satellites are shot down by aliens.
So do one trust the gadgets with your life?
One should always have a back-up - be it extra batteries or anti alien missiles. But the one thing an old sailor learned me the best backup was a chart and a compass along with the knowledge to use it
Remember - Always keep a compass near and plot your position and course
on the chart (paper chart) every half hour.
in response to Tillerman's writing project