This paper argues that there are two major factors underlying improved global health outcomes. These are, first, the discovery of cheap technologies that can dramatically improve outcomes and, second, the adoption of these technologies thanks to the spread of knowledge. Other factors have played...

Many development initiatives fail to improve performance because they promote isomorphic mimicry—governments change what they look like, not what they do. This article proposes a new approach to doing development, Problem-Driven Iterative Adaptation (PDIA), which contrasts with standard...