I worry about one specific economic factor - where is this $12K/year for every American adult and $6K/year for every American child going to come from? If you take per capita GDP ($65K), subtract out the government expenditures that aren't going away like the military, Social Security, Medicare/Medicaid, interest on the debt, running the government, etc. (~$13K), subtract out non-residential fixed investment which is basically business capex to keep their operations running ($9K), that leaves $43K remaining per capita. Now assume 210M adults and 120M children and you need to take ~$10K of that $43K to fund it. So an ADDITIONAL tax of ~23% across the board. Note: I'm not criticizing the theory of UBI, which I think is sound, I'm asking how we fund the specific amounts that often get thrown around.