The book  addresses how change is made, and especially the difference between change type 1 (aka. change from the same dimension), and change type 2 (aka. change from a dimension n+1). Nothing new here, I had my own vision of it before reading the book, and I even found something similar in . The attempt at the beginning of the text to use a mathematical ground for the explanations is laughable (IMO), but the book is interesting as it gives plenty of real-life examples of changes and how they can be seen as type 1 or type 2. It describes a therapy named Brief therapy.
Surprisingly, there is a French movie showing the proposed therapy in action on a 17 years old schoolgirl (see ). Much of the same terminology of the book is used in the movie.
The book makes a (remote but) relevant reference to Buddhism, which I could relate to what I read previously in .