Hmmm....never seen a paper map overheat and fail, or run out of power, or crash for no apparent reason......but having worked in IT for nearly 40 years I have seen ALL types of IT equipment fail......I was at a fly-in one time when a pilot told me about how his two identical, supposedly totally independent, glass panels failed at the same time. Perhaps due to the same, identical bug...
I would always have a map handy.
Cheers
Neil