"The technology of the printed book engenders certain notions of authorial property, authorial uniqueness, and a physically isolated text that hypertext makes untenable. The evidence of hypertext, in other words, historicizes many of our most commonplace assumptions, thereby forcing them to descend from the ethereality of abstraction and appear as corollaries to a particular technology rooted in specific times and places. (Landow, 260 as quoted in Comm & Cyberspace)."
These sections dealed with virtual reality and in the case of chapter 15, the last days of the book. I believe people are more intriqued by the computer and therefore book and magazine or overall print sales are suffering. This fascination with cyberspace is due to the ability to interact. Rather than just getting information from a book, an entity that is unresponsive to your feelings and thoughts, we can now interact with the information and share our thoughts, explain why we agree, or disagree.
However, I do not believe that print is dying. Of course, it is not as popular as it once was because it is no longer "new" and because the younger generations have been raised on digital technologies and not books. However the book will always be around because there is a feeling of trust and truthfulness with print, which is what I believe Landow was saying.