That's a pretty major thing that routinely gets only vaguely handwaved at. What does "really, really low" mean, in numbers? "Comfortable living" is a very ill-defined measure and not usually associated with "really low" income, anyway.
Really really low basic income already exists, for example all residents of Alaska get a "dividend" each year which varies somewhere around $1,000-2,000. Presumably, UBI would be greater, but how much greater?
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.