> This means that fewer working mothers can find child care, fewer laborers to mow your lawn, fewer nurses, fewer teachers, etc. No matter how much money you give to people, fewer services provided makes us all become poorer. That's simple arithmetic.

This is, in fact, precisely backwards. There are plenty of jobs that people simply cannot do because they cannot make a living at them both through lack of money as well as lack of stability. Social workers, elderly healthcare support, child care, etc. are all very poorly paid and basically not worth doing if you have any other choice.

With a UBI, people can work those jobs for very small amounts of money knowing that they are covered.