With the premise that every single Computer turned off.
I guess that we'd have to turn them back on again.
Savage...but so true!

We're done only if that storm never stops, any other case - a lot of distress and angry people who's transaction was unfinished/stuck, and still, you'd have to be really unlucky for that to happen to you
Bitcoin will be the last thing you think of, if all the electricity goes down, imagine value of water over some "money"