Innovation and reuse of knowledge are one way the World Bank addresses the needs of its constituents. The World Bank’s clients need more than money; they need expertise, advice, and a forum to create innovative solutions. When faced with massive undertakings, such as the rebuilding of Afghanistan or clean water in underdeveloped countries, the World Bank must be able to find, reuse, and adapt experiences and expertise from around the world, as well as provide clients and experts a way to connect with each other so they can pool their knowledge and invent new solutions to new challenges.