Earlier quoted context omitted.
> If someone loans you BTC, the supply of BTC has not increased. True when someone does it, false when a fractional reserve bank does it. When someone loans money to someone else, money physically changes hands and there is no concept of a reserve. Banks are able to maintain the illusion of full reserves even though they operate in a state of perpetual insolvency.
Please explain the mechanism by which a "bank" is able to transfer to you an amount of BTC that they do not have wallet control over? This is a critical difference. A bank can loan you fiat money that they do not physically have, with the almost always correct assumption that most people won't want to convert that database entry into cash at the same time. This is not possible with bitcoin. Either the bank has the co…
They change a number in their database. All they have to do is edit the entry that records how many BTC you have in your account.
Whether you can actually withdraw those funds is a completely different matter. They're totally available for trading though.
> the almost always correct assumption that most people won't want to convert that database entry into cash at the same time
> This is not possible with bitcoin
It is. Most people do not withdraw bitcoin either.