Jack Sim is a genius. He understands that if you wants to progress the improvement of basic health standards and provide toilets in order to end open defecation someone has to be making money. Be careful about organic fertilizer, apparently fertilizer from human waste is premium stuff! He helps people make the necessary connection that sanitation and business that can flourish because of it can help end poverty. He's a good example of the relationship that entrepreneurship and the free market should have on social issues.