Money plays two roles, 1. a medium of exchange and 2. an instrument of power.
Money is a social power embodied in law as a payment system and as such should be a public utility but today it is all privately created for profit when a bank makes a loan. The physical currency is printed and minted by the government and the paper bills are sold to the banks for cost of production for their customers cash needs. The coins cost more to make so government sells them at face value and gets some seignirage from that every year. To allow money to become a source of revenue to private issuers is to create, first, a secret and illicit arm of the government and, last, a rival power strong enough ultimately to overthrow all other forms of government. Ten centuries before the birth of Christ it was recognized that one of the most vital prerogatives of democratic self-governence was the sole right to issue money. We've used commodities like gold and silver as money, and today we use credit/debt for money, both controlled by private interests. Greenbacks were money issued as money, a permantly circulating asset. Learn more at monetaryalliance.org Real change will not come until we get the money right.