What constitutes money? how fractional reserves operate as probabilistic fraud (X promises to pay Y, but figures there is only a 10% chance that Y will actually take delivery).

The language on the "notes" 100 years ago was an ordinary sentence, written in plain english...

"the united states of america will pay to the bearer on demand X dollars"
http://www.papermoneyauction.com/not...lexperakis.jpg