In business‎,‎ the lean start‎-up movement is turning the traditional approach to innovation on its head‎.‎ Rather than developing an elaborate plan‎,‎ raising money to fund it‎,‎ and then following it to its uncertain conclusion‎;‎ a process that can take years‎;‎ entrepreneurs in companies new and old are launching small inexpensive initiatives to test ideas‎,‎ quickly learning from failures and successes‎,‎ and using that data to further refine the ideas and test them again‎.‎ Social entrepreneur Michel Gelobter says there's no reason the social sector can't do the same‎.‎ Gelobter goes through the lean startup process step by step‎,‎ showing exactly how nonprofits and advocacy organizations can adapt it to increase their impact‎.‎ He uses dozens of real‎-world examples‎:‎ a homelessness group that discovered the one metric they needed to improve to get more people off the streets‎;‎ a technology‎-based literacy startup that was able to reach two million children in two years‎,‎ when it took a more traditionally‎-oriented program fifteen‎;‎ and many others‎.‎ From the glimmer of an idea to make the world a better place to deep reform in the heart of the world's largest government and non‎-profit bureaucracies‎,‎ Michel Gelobter shows how the lean start‎-up can drive a revolution in policy and social change‎.‎ In business‎,‎ the lean start‎-up movement is turning the traditional approach to innovation on its head‎.‎ Rather than developing an elaborate plan‎,‎ raising money to fund it‎,‎ and then following it to its uncertain conclusion‎;‎ a process that can take years‎;‎ entrepreneurs in companies new and old are launching small inexpensive initiatives to test ideas‎,‎ quickly learning from failures and successes‎,‎ and using that data to further refine the ideas and test them again‎.‎ Social entrepreneur Michel Gelobter says there's no reason the social sector can't do the same‎.‎