Permaculture is a way of thinking as well as a system of organizing intelligent ecological and ethical design. It does not focus on the elements of sustainability in themselves (for example the details of organic living, eco-building, appropriate technology, community building, green finance, or rainwater harvesting), but on the beneficial relationships between these elements. It goes further, focusing on how they are put together to make them as energy efficient and sustaining as possible, for people, the planet and our ecosystem.