The three trillion dollars or more we have wasted in misguided development aid probably represent an even bigger sin. But it seems to me that the worst sin of all is our abject failure to achieve scale for the handful of projects that have produced measurable positive impacts on the lives of poor people.
How can we successfully achieve scale? It takes planning and designing from the very beginning, and the unleashing of powerful positive market forces at the locations where poor people are buyers and sellers. The only way to unleash those forces is to demonstrate to global businesses that they can earn attractive profits selling transformative products to poor customers. This is exactly what I have dedicated the rest of my life to accomplishing.