As a society, do we need to worry about where this money will come from? Or will there always be an inexhaustible supply that also scales up? Or could taking that money away from other parts of the economy possibly cause harm, to the point where the ubi would become unsustainable?
Do we as a society know where money comes from now? Could the current distribution of money be denying ourselves greater value? Is the current system sustainable?
> Do we as a society know where money comes from now?
Technically, yes. The only difference between money and an IOU is the formal paper trail (i.e. accounting). The paper trail tells where the money comes from. Granted, we as a society don't always follow the paper trail, which is perhaps what you are meaning?
What the parent means, though, is that money still needs a real, live person standing behind a promise to provide something in the future to whomever holds the IOU (money). Without such a promise, the IOU (money) doesn't mean anything. But who is offering to make that promise? Are you volunteering your services?