Earlier quoted context omitted.
How is the US dollar not a digital currency as-is? I can put physical money into anything that is a bank in the states and get dollars to spend digitally…
Banking is digital, and thus functionally money in general is digital and has been since the 60s. The dollar itself is physical. No central banks are proposing the use of a blockchain, as that would be a completely ridiculous and counter-productive thing to do. But some are investigating good old-fashioned centralized ledgers that work, can scale, are cheap to run, have reversibility, have fraud protection, have iden…
That's not true in practice. Dollar may exist in physical form but most of them or any currency exist in purely digital world. When Fed announces a trillion dollar stimulus, printing press don't go burrr. They just make some entries in computer an a trillion dollars are created.