This paper bears on our discussion of money as IOU
in various forms, currency, reserves, bank deposits, etc.
Warren Mosler relies directly on this paper when
describing money as "points on the scoreboard."
While all money represents mutual credit (society
discounts natural events, creates money, manipulates the environment, and
accepts money) I would not go so far as to view Fiat money used to pay
taxes as a form of debt, since it is possible for individuals and firms to hold
money indefinitely (as long as society recognizes its purchasing power) as a sum
that is not encumbered by any promise to repay.
If the government issues money to pay for public
goods and accepts it back as taxes, this does not make Fiat money
an IOU, but it permits IOUs to be kept on the books in the Fiat money unit of
account.
Joe