A Must Read for anyone who works with young single adults, ages 18-30. Starting with a membership of thirty five, a congregation of LDS young singles in Albuquerque, New Mexico, grew to 220, was divided, and then grew again to more than 180 in just over four years. During that time 83 couples met each other, dated, and married. Chuck Brown and his two assistants, David Hardy and Jay Cobb, together with their wives directed this incredible process. If you've ever wondered how to communicate more effectively with young singles, motivate them to participate in your group and influence them to change their lives in positive ways, this book is for you. The key to their success was coming to know and embrace a principal called Critical Mass!