Social impact design — the practice of design and architecture for the public good, especially in disadvantaged communities — is challenged by the lack of clear goals, accepted standards and guidelines, knowledge-sharing structures, and metrics for assessing impact; cultural bias; and difficulties in sustaining projects, a report from the Smithsonian's Cooper-Hewitt, National Design Museum, the National Endowment for the Arts, and the Lemelson Foundation finds. The report, Design and Social Impact (41 pages, PDF), highlights discussions from the 2012 Social Impact Design Summit around topics such as nonprofit vs. for-profit, design centers, incubators, and contextual and parallel models. The report also highlights discussions focused on preparing future designers for social impact work and makes recommendations for the field, including expanding networks, emphasizing storytelling, building a culture of evaluation, and creating alternative funding strategies.