EMP could certainly be behind that thinking. Weapons that specifically emit ?clean? electromagnetic pulses are being researched. They could wipe out all computerized transactions and paralyze transportation systems with no nasty fallout. But today, the most likely EMP sources are nuclear bombs. In which case accurate timekeeping may be the least of one?s worries? It might be better to keep an old car without electronic transmission wrapped in grease paper in your shed. :lol:
Quartz watches do emit electronic noise themselves. Perhaps a mech watch might also be desirable around fancy electronic equipment?
Gert