Targeting on one observable? Hi David. Interesting post and debate, as usual. I don't seem to see any discussion on the targeting criteria (roof material), which seems problematic to me - but maybe I haven't looked at the documentation closely enough. Isn't the criterion providing a perverse incentive? It seems some people have changed their roof material as a result of receiving the cash, but does that mean they automatically graduate from the program in subsequent rounds? That must be providing some signal to households on what not to do with their money, in a way that may result in perverse outcomes.