I didn't mean to do that. I grossly over simplified it.
It's backed by NOTHING
You are correct, it's not back by any asset as such. Consider though, the Saudi deal which ensured its reserve status by forcing all oil contracts in USD. True, it's not backed by any asset, but that deal indirectly ties it to petroleum, thus energy. You could make a case that the dollar is backed by violence due to military enforcement.
In effect, all currency must have some identifiable value or people won't accept it. I think it's a mute point since it's collapsing now.
(post is archived)