How could they lend 10x what they have? At the moment the banks can create digits out of nothing if you lend money from them. But how should that be possible with Bitcoins?

The only way, that i can imagine is that they give you a "electric bill" that says its wort x amount of btc. These "electric bills" could be created out of nothing. But i can t seem to imagine someone would be so stupid to take a "electric bill" instead of the bitcoins.


In former times these debt based bills were more practical, than some gold or silver that lays in a safe. And thats why they were used. But there is no reason to use an "electric bill" instead of a safer electric currency that can not be created out of thin air.