There is the small matter that someone else's labor is filling their bellies. Humans try to take advantage of any system, and it's not hard to see where the fai

There is the small matter that someone else's labor is filling their bellies. Humans try to take advantage of any system, and it's not hard to see where the failure point for UBI is - it's everyone becoming a freeloader, with no one left to do the work necessary to feed, clothe, educate, etc. the people on UBI.