Very forward thinking post, but I thought I might bring it back to current day, in the space of a year, my local shops went from not accepting electronic payment for less than $10 to now having signs up that say "contactless payment preferred", some even say cash not accepted. Its amazing how society has transformed in the last year due to the pandemic, and it is very tragic, and I mourn all the loss of life. But now everyone is comfortable with electronic payments, the next step is to make sovereign cryptocurrencies, its only a matter of time. My guess is China will be the first major economy to do it.
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