An economy and a monetary system are mind-bending concepts. We are essentially indoctrinated by sloppy thinking/reasoning in this sphere. We all know the maxim - "money doesn't grow on trees". It's supposed to represent the idea that there's a limited supply of money. But money supply isn't limited. It's continually being created. And I think this simple point is something most people probably don't realise or at least stop to consider. Money essentially does grow on trees. It's going to keep appearing year after year, and harvesting that production of money is perfectly normal behaviour. Currently, the majority of money is harvested for non-economic growth (mostly financial and real estate speculation). And Joe Citizen is perfectly fine with this. The reason that he is fine with it is because it doesn't actually matter all that greatly that a chunk of money is created and spent on stuff that doesn't add economic growth. Yet when you present the idea that we can just create money and give it to people to help them survive for nothing in return, he somehow thinks this is unsustainable. I mean, WTF Joe? In this case, these people are definitely going to contribute to economic growth (basic survival is economic growth), and the money created via central bank printing (or cryptocurrency say) is debt free, unlike normal commercial bank money creation, and therefore could be repaid (system-wide) if we so wish.