Dr Kim said: "We have just not focused on the enormous complexity of delivering health care in a way that keeps people healthy." "Keep people healthy" You say that the World Bank has been doing science of delivery all along. Do you know how much of Bank work in health projects is to KEEP people healthy , as opposed to treating ill people? 10 % vs 90%? Or 50% vs 50%? So what should this proportion be, since the Bank is spending taxpayer money? 90% vs 10% seems to be a superior mix, to provide incentives. Dr Kim is challenging the World Bank to make this part of the science, but you did not include it.