Earlier quoted context omitted.
I don't think cash would hold much value, there would be insane inflation due to hardly any value of cash and extreme demand after limited resources, cash introduction would be fine after maybe a year when people would get used to live without grid, but in first weeks/months it would lose all the value.
Have we got any historical data or decent models? I guess the problem with this is there's no precedent to formulate a null hypothesis against. If inflation was a factor it would affect digital systems linked to the same currency equally. Cash would still win out on availability. My feeling is that, in the absence of digital systems, physical cash would in fact gain value as a tangible asset intermediate to barter of…
Yes, Ukraine is the recent example. Cash still worked in occupied territories, that were cut off from communications. It is the only way to conduct transactions, even with inflated costs.