this is how free market hard money interest rates arise - through the combination of the amount of reserved money being used for lending, versus the rate of failure of loans, it's pretty simple math to come out with a living from it, but it is risky at first until you get a measure of your default risk rate
Discussion
keep in mind, as you observed yesterday, or the day before, money that is in cold storage has a different character to cash on hand and savings (which are a little harder to dig at)
Your default rate as a loan shark is substantially the product of your demonstrated capacity for violence. Your own, or via privileged access to a State's capabilities.
