Interactivity is indeed hard to define because it is used in so many different ways as the author mentioned. His definition is very useful and puts a specific meaning to the kind of interactivity we are striving for as Interactive Media students. Commenting on some of what he said, a book can be turned into an interactive experience as is seen in the choose-your-own-adventure books, you choose what happens to the character while reading. The same idea goes to recent movies and TV shows. However, all of these could be interpreted as interactive games instead. Through trying to go against his definition of books and movies I’ve proved his point. The movies or books as they are are not interactive, but they can be if you had made changes that include his definition of interactivity. This includes the 3 parts of the conversation speaking, thinking and talking.