Yes because it's easy to determine physically disability while glancing at someone as you drive by. There are days where I am able to cut my own grass (they are rare, but they happen.) There are days when my friend, who has lymphoma, is able to work. Disabled means you aren't consistently able to work enough. Also interesting you can establish paternity visually. And I'm certian there are many women out there willing to go through the difficulties of parenting in exchange for food stamps. You mentioned the word obtuse? Yes I think that's the appropriate descriptor here.