The philosophy of Jeffrey Sachs revolves around a simple tenet: the world’s problems are man-made, therefore they can be solved by man. Of course, immediately following that simple idea is an avalanche of complexity: how to decide which issues get priority, how to navigate through governments, how to raise funds for foreign aid, how to distribute those funds. For most, the list can seem endless and the greater picture nearly unimaginable. But not to economist Jeffrey Sachs. Sachs has the uncanny ability to see not only the greater picture, but also the ability to map it. And that conceptual mapping is key: if you can’t measure distance, you can’t truly plan for the journey.