The book is based on case studies of schools that have moved toward the new frontier of open, online education. DeMillo says that those innovators will be swept away unless they can keep up with the fast pace of change he foresees. “They clearly know that a 21st century revolution is under way, but they think that their institutions are at the center of it. In reality, they are bystanders. They have already been pushed to the margins to watch as their world is reconstructed elsewhere,” he writes.