How often do we read books before it gets boring?
I mean be realistic even the best story goes flat and does not bring excitement like a new one. We know what happens and all surprising moments are gone. Sure the writing style could be a reason to read a book multiple times and it is still relaxing, but a new or changing book with the same style does much more.

Where is the author providing me a changing book?
I am thinking of a story coming to a point and split into multiple directions. But only one direction can be followed at the time. After a short while these different ways could merge back only to split again. On paper these jumps between different actions in one story could be too obvious and it is easy to follow all of them, but on a computer these splits can be done by coincidence. So reading the book and come back to it twice will provide a different story over and over again. Can you imagine book critics or readers speak about a book which was different for every person who read it? Nobody read the same story but speaks about it enthusiastic. Explaining scenes which have no been shown for the other readers. Can you imagine the confusion and fun in the discussions? And nobody can go back to a page to reread it or recommend it to somebody else.

Or, let have an open story. Some topics, names and dates are given and different writers fill the gaps, meet their writing at different points and split again. Open sources that allow coincidental jumps. Like a never ending story.

To avoid that the book software starts at the same location and would spring the same pattern all the time giving only one story the computer date and time could be taken as input into the creation of the random numbers. Books will never be the same.
Please let me now when the book is written.