Consider this... majority of those on food stamps.. run cash businesses or work for cash only. DO NOT PAY TAXES and wouldn't know how to if they had to. Most don't even want a real check because if they did they would lose their housing/WIC.
They build their life around public housing and food stamps. THAT IS THE PROBLEM.
The post about the navi may seem far fetched, and it is most definitely not the norm. But, you would think if someone lives in public housing they would not be able to afford a car, yet all of the projects I know are filled with cars. And to no ones surprise, 50% of the cars have rims on em..