But I'd be curious to know why you think a UBI is qualitatively (not quantitatively) different from other public spending or transfer programs.
And given that economics is a field with significant disagreements among professionals, and that consensus opinions are often proven wrong by actual events, I'm wondering who you think is correct. Even (maybe especially) Ph.D. economists admit that their economic models are incomplete simplifications of reality.
And lastly, if you're interested in a teaching professional's opinion/analysis on a topic,
there are better uses of the Internet than asking anonymous posters on a political discussion board to weigh in.