I read a disturbing article on Bloomberg last year about toilets - India has a project to build toilets and try to get villagers to use them, but they won't. Bill Gates says the world doesn't have the resources to build toilets and plumbing - perhaps he is worried about a second order problem - there might not be the desire, or education is so backwards that we need to solve that first.
http://www.bloomberg.com/news/2014-08-03/india-s-toilet-race...
I still can't get this line out of my head:
"About 800,000 Indians worked as feces removers in 2008, often carrying excrement in baskets on their heads, an occupation that causes them to be excluded from parts of society."
Imagine almost a million people carrying shit in baskets on their heads.