Family therapy is another theme in this book. This is another important theme in the book. Family therapy has undergone a number of changes over the course of history. During the book, the specter of injustice is revealed. During the nineteenth century, therapists tended to treat individuals. When there were symptoms, one person would be brought in for therapy. Often therapy would help, and the person would improve. Therapists also noticed that all too often when a patient did show evidence of great improvement, other members of the family would take the person out of therapy when the work wasn't yet completed. In the most extreme cases, an individual would be removed from the life of the family and most of the social situations by being institutionalized, as was also frequently done to the handicapped.