when we talk about back-up, let me ask who has ever seen God, no one, but in dollar we put In God We Trust, moreover, we donate real wealth to church for the sake of God, what's happening here?
Faith! It never appear in financial world during human's history. Bitcoin faith = transparency, freedom, fairness, millions of man hours spent by believers are the backup of this currency for the better future of human being. The true deflation will eventually unlock the entire potentials of human being, because people are able to choose what they love to do, this concur to the productivity trend as well but unfortunately distorted by current vested ruling classes.