I don't have to be able to predict the future more than everyone else to vastly expand water reservoir's, increase education, build solar/wind/fission, public w

I don't have to be able to predict the future more than everyone else to vastly expand water reservoir's, increase education, build solar/wind/fission, public works... also, i've seen HN comments do extremely complex calculations about delta V but no one seems to do that math for UBI. what's 300m * $1000 a month? and 1,000 still doesn't cut it in most major cities.