The book is an excellent treatment of AI and its implications for humanity. Everyone is of the opinion that AI will rule the world. However, all technologies have a darker side. The book looks at some of the darker applications of AI and sketches out three scenarios, a doomsday one, an optimistic one and a practical one. It then goes on to describe the actions needed to achieve the the third option where AI will serve humanity but also be kept in check from creating problems for humanity.