I used to mix User Interactive with User Interface. And now I see they lie on different levels.
Actually, I hate the disgusting word: User. It kill the imagination of the inventors. It is a flubdub word but everyone seems to give it the first priority to highlight it everywhere. So the titles for UX UI UE GUI...seem
to discribe such a flood of people like me who graduate with Industrial Design and cannot find a good job of product design so take the opportunity on the "User" Concept to feed the family...
Back to the book, It's simple and goal-oriented. That's enough for it to stand out among so many nonnutritive books.