So, recap:
We have shown how interest gets paid - and nothing abnormal happens to the banking system
Oh yeah, sure, as long as we count massive inevitable default as 'nothing abnormal'.
...a loan repayment IS a transaction - which means money needs to be withdrawn to engage in the transactions!
Yes, we agree there, so why the exclamation point? There's nothing new, interesting or surprising there. We don't disagree on the nature of a loan payment - we're just playing out an end game scenario through to a conclusion, as we trace
all transactions, over time, no rush, that are required for the entire system to reconcile - not just a single payment in the moment.
If this withdraw money risks the same situation as a bank run ... if suddenly EVERYONE withdraws money (the reason does not matter, whether to hold cash or pay off loans), the banks default on their promise.
Aye, and there's the rub for the end game scenario that you completely avoided as to details - in the case where $900 (principle) plus $1,207.02 in interest ALL must be paid. Over time, debtors go to pull money from banks to service loans. That all amounts to a bank run, as debtors are increasingly unable to withdraw. Both creditors and banks default on their promises. Banks that default are no longer around to create loans (the primary way in which money is introduced into the economy, but they're not making new loans - only reconciling and winding down over time). As the amount of fiduciary media dries up in the aggregate, so does the velocity of money - the number of transactions -- and therefore deflation (of the number and magnitude of transactions possible).
The key, Steven, is the reason for the bank run is irrelevant... you here thought that paying off a debt is different then paying for goods, or withdrawing cash to hold in hand... but it is not.
No, I pretty much had my eye on that little pea under the walnut shells the whole time. I just wanted to see how you moved them around. You're so careful to show how monopoly money moves as principle only, step by step, and yet you completely glossed over, in a very sloppy, dismissive kind of way, with broken trains of thought, how all the debts - principle
plus interest - would be paid in the aggregate in the scenario I described. To wit:
It triggers the same default scenario.
Correctamundo. In other words, although you didn't say it directly, and wouldn't play it out with your monopoly money, there is not enough M0 in existence to facilitate payment of all debts in the aggregate. The
interest due is all M0. No getting around that, and there's $1,207.02 of it due - with only $100 in existence to cover it. Attempting to pay off all debts (while not Ponzi-ing any new debt into existence to cover the illusion of solvency) is the same thing as a massive, absolutely unavoidable, system-wide bank run. Just to service debts on time. Even pretending for a moment that everyone is surviving using another currency while this one winds down.
Thus long before all the debts are paid, all banks, as well as many debtors, are forced to default. And if an attempt was made to pay off all debts - without any new debts being created to service payments on the old ones - the money supply (and by "supply" I mean the actual amount of money in circulation, not existence) does indeed dry up completely.
That $100 original FED reserve (and you're right, the number of zeros is irrelevant) represents the entire quantity of M0 in existence. There are INTEREST claims on that money over thirty years which are 1200% of the total amount of M0 in existence in our scenario. The domino effect wipes out everyone, including the last creditor and bank standing, because that $100 is still in someone's possession, and insufficient to meet their own demands, meaning that, like London Bridges, "they all fall down".
Catastrophic deflation, even internally. No velocity, no circulation, no expansion of credit, no money.