> Authority, and specifically "centralized" authority, is a necessary component of any system that can effectively serve more than a nominal quantity of human beings.
It would seem bitcoin, a global, massively successful cryptocurrency with no centralized authority, serving as a sovereign nations national currency, serving markets all over the world to the order of trillions of dollars would be one of many direct contradictions to your claim.
Neither the fact that the failed state of Venezuela has made some moves towards Bitcoin, nor the amount of nonproductive/wash volume that crypto does per day or whatever, serve as counterpoints to my claim.
Currency had an actual definition, expressed in terms of other actual things. It's not just whatever you say it is, or whatever someone might use to perform an economic activity.
Additionally, Bitcoin is plainly not "massive successful". It is at best "marginally utilized".
It would seem bitcoin, a global, massively successful cryptocurrency with no centralized authority, serving as a sovereign nations national currency, serving markets all over the world to the order of trillions of dollars would be one of many direct contradictions to your claim.