slums, waste, idol hands of abject poverty. my next guest spent time studying some these places, particularly those spotlighted in brazil. he sees the bright side to slums. ed rozier studies slums. you have a chapter called, what's good about slums, when you look at slums in brazil, ind india, what are we missing? >> we're missing the alternative. while we no never want to spend a week or month of our lives in these slums the people who come there are not fools, they are moving places that are far worse. it gives them the ability to find a future. they're hellish by the standards that we're used but not hell hirsch than the rural arias of