I see being an advocate for UBI as advocating for solid answers to those questions. I would also point out that there's a difference between a full UBI, a mode

I see being an advocate for UBI as advocating for solid answers to those questions. I would also point out that there's a difference between a full UBI, a modest partial UBI, and the kind of "basic income" that's not universal and goes away at a rate of 50c on the dollar when you earn more, like in this study. You can't slowly roll out a full UBI, but that's definitely possible for a partial UBI or a means-tested cash payment. You can dial the amount down as far as you want and still study the impact.