[AmericanChopper]

I think you’re forgetting the bit where the business that took the $850,000 loan is left with $850,000 debt and $0 balance after they spend all of it. Every time it passes through the system the amount recirculated simply decreases by the reserve %. It all still adds up to the original amount (plus interest).

In your example though, the bank has a different problem of offering unsecured loans, which could lead to some losses for them.