Nearly any arrangement is economically possible for 6 months. The government can implement price controls, enforce unlimited paid vacation and give everyone a million dollars; even that might hold together for a month before people start starving.
Holding together over the medium-long term is a completely different story.
I think the idea is the cost outweighs the benefit in non emergency situations.
Previously, Kevin Phillips' book Wealth & Democracy in America is a more academic, pedantic telling of the same story.
https://www.amazon.com/Wealth-Democracy-Fortunes-Government-...
https://news.ycombinator.com/item?id=22566970
He however was not downvoted for the observation.
// somedev1 - 6/7/02 Adding temporary tracking of Login screen
// somedev2 - 5/22/07 Temporary my assThanks
Muslims still had to work in the economy and run businesses, and it was a Muslims majority land, so a few Jews lending money with interest is not going to affect the overall economy which is not based on interest.
As other commenters have pointed out, the interest rates are also historically low.