Public housing projects often fail because they concentrate poverty instead of mixing incomes. A friend in Chicago lived in a building where 90% of tenants were unemployed, and the stigma made it impossible for him to find a job nearby. Wouldn't it be better to give housing vouchers that let poor families rent in middle-class neighborhoods, even if the per-unit cost is higher? I know vouchers have their own issues—landlords can refuse them—but at least they spread opportunity rather than stacking disadvantage.