Do you know about Confirmation Bias? People more likely to believe information that fits their pre-existing beliefs, but they’re also more likely to go looking for such information. Hence, we are stuck with wrong design of the development programs dooming millions of investments. So, we do not let evidence from the ground guide the policy? Unfortunately, it is hard to get clear-cut evidence of causality. Using evidence to guide aid and social work is crucial to ensuring the efficient use of limited resources. For years, policymakers have debated different approaches to helping the poor and now they have published research paper after a nine-year, six-country study, offers resounding evidence for a strategy that works. Proponents of randomized program evaluation argued more field experiments were needed to learn what worked. There are also critiques like economist Angus Deaton who suspects that an average bureaucrat might take the results in controlled environment too serious. Any ...