David McCourt is an Irish-American entrepreneur and founder of Granahan McCourt Capital. McCourt speaks about his new book "Total Rethink: Why Entrepreneurs Should Act Like Revolutionaries." McCourt is one of the world’s most successful, award-winning business people, widely recognized for using technology and innovation to improve the lives of underserved communities by deploying new revolutionary ways of thinking. Over the last thirty years he has founded or bought twenty companies in nine countries, becoming a leader in the technology, media and telecommunications industries. An Emmy award-winning producer, McCourt’s work has included prime-time documentaries that highlight the world’s most prominent problems. McCourt’s production of critically acclaimed children’s TV series Reading Rainbow became the most watched show in the classroom in the United States.