Any proper experiment for UBI requires 1) to do it for a whole economy. You can't have 10 or 100 people on UBI where the job market, prices etc aren't affected

Any proper experiment for UBI requires 1) to do it for a whole economy. You can't have 10 or 100 people on UBI where the job market, prices etc aren't affected by UBI. And 2) For life. The small effects on behavior if I'm given UBI for 1, 3 or 5 years are going to be so small as to be uninteresting. The surprising results will just be artifacts of the experiment.