> There's no particular reason why a transaction can't be such a resource, any more than any number of other very abstract resources that exist in the world. W

> There's no particular reason why a transaction can't be such a resource, any more than any number of other very abstract resources that exist in the world. Well, true, but also kinda besides the point? I mean, what you are saying is essentially "there is no particular reason why a transaction can not be represented as a sequence of bytes". But by that measure any sort of protocol or transport that can move sequences of bytes is equally good/useful. The fact that you can in principle tunnel anything over anything is not a useful insight when trying to determine the usefulness of a particular abstraction, at best it tells you that you can always add another layer of abstraction to add missing functionality.