we see this clearly in the quality of food for sale in different neighborhoods. grocers in poorer neighborhoods don't have the quality of produce, whereas it's almost difficult (although many still do) to find non grass-fed/free-range/organic/whatever in an upper-class supermarket. so if i'm on food stamps, it doesn't matter what types of healthier foods i'm allowed to receive if they aren't edible. do we really expect people on gov't assistance to travel to rich neighborhoods just to buy groceries? i'm sure the locals would love that, too.