That's a very helpful illustration, thanks. I guess it seems...funny to me that the one level of abstraction (paper money representing the power to exchange go

That's a very helpful illustration, thanks. I guess it seems...funny to me that the one level of abstraction (paper money representing the power to exchange goods and services) is so much more preferred to the other (digital representation of that power). Already now, most of my money is represented as a digital recognition that I own part of a pile of cash that I will never actually take physically.