This problem is most obvious in UBI discussions. Anyone could use Google to look up the US population and multiply it by their imagined UBI payment amount to see how much it would cost. Yet 9 times out of 10 when I hear someone talking about UBI they have some fanciful ideas about everyone getting $30-40K per year without realizing that the total cost of such a program would be far higher than even our total tax revenues currently. Even if you cut all other social programs and only offered UBI it wouldn’t make a difference. A UBI program that writes large checks to everyone would require tax increases that reached into the middle class.