This isn't rocket science

Associate Supreme Court Justice Anthony M. Kennedy speaking at New York University’s commencement:

Think of the people around the world, and particularly in Africa, who have no clean water. Women in Africa — and the job falls to women — must spend six, eight hours a day just in trying to bring clean water to their children.
Eight billion hours a year of human effort are spent just in bringing water. And when I heard that statistic, sitting like you are in an audience, I thought, "Well, he must have said eight million." Then I thought, "Maybe it's 80 million." It's eight billion hours a year of wasted effort because the water is often contaminated when it gets there. This isn't rocket science. You can fix this.

You’re right Mr. Kennedy, development is not rocket science.  It’s much harder.