Vibrant communities in Latin American sites and services neighborhoods – thank you for sharing that with us. It would be good to record cases in Latin America. A team of MIT students is doing that in Quito, but more case studies would help. The latter two points that you raise about why it may not work in China are, probably, valid in other countries as well. An approach that creates neighborhoods that looks ramshackle for quite a period of time is, indeed, not likely to get support easily from politicians and better-off urban residents. But the argument that could be made is that: (a) many these neighborhoods do consolidate over time; and (b) the alternatives – e.g. slums or limited public housing (that is often poor quality and becomes segregated and/or ghettoized) – are often much worse. Thanks for your excellent comments!