If there's a natural disaster cutting off electricity for days, trading bitcoin should be least of your worries really. Priorities man.
sorry I meant to say, how does one trade with BTC
ie. how does one buy food/water with BTC in such circumstances if BTC is the most preferred currency for trade (like Venezuela)
you do the same thing as you do when you have no electricity and a POS machine and want to accept credit cards!
it is really the same thing. we are living in a modern age and we rely on these modern stuff like electricity and even internet to be able to function well. if electricity goes out the shop only accepts cash so you can't purchase anything unless you are carrying cash around, and who does that these days ? eh?