Contractual Fractional Reserve Banking

Actually, if you go to a bank and put $100 in a demand account, and they lend out $90 (assuming a 10% reserve), that $90 ends up in someone else’s account. So there are two claims: one on the $90 and the other on the original $100. Then if 90% of that $90 is lent out, there are now three claims: on $81, $90 and $100. If the process is repeated often enough, there are numerous claims which total up to approximately $1000. (the original $100 + $900 in loans)