So, I'm a layman here, but I feel like he makes narrow banking (i.e. full-reserve or maturity-matched banking) sound more dangerous than it probably is, for instance: > Take an exploding mortgage, the only way to finance homes in a dystopian alternate universe. It’s like the mortgages you are familiar with, except it is callable on demand by the bank. If you get the call and can’t repay the mortgage by the close of t…
The reason “fractional reserves” keep creeping back in whenever you try to offer mortgages to more than just rich people is because fractional reserves are a way to invent money out of thin air, and you have to invent money out of thin air because the not-rich people buying the houses do not have the money to afford the house (but they can make that money if they focus on it for 10 or 20 or 30 years).
You often see people demand to know why banks are allowed to do fractional reserve banking. And this is the reason: it lets banks offer mortgages and credit cards to most of the public. Most people don’t have much money, but do have a lot of future earnings. Giving people access today to large chunks of their future earnings is a big social good but it fundamentally requires money to be invented from thin air, and that invented money is then gradually filled in with real money over time as the earnings come in.
So somebody somewhere has to be inventing trillions of dollars. This is risky. The capitalist way is to have private entities who profit when they manage their risk well, since that provides the strongest incentives for competency. And the democratic-capitalist way is to heavily regulate those private entities, eating some portion of their profit to provide some extra value to the public.