Due to have a nook, it is really easy to start a book, and then switch over to another one before finishing the first book. I tend to do this a lot. It is like changing the channel on the TV based on what you want to read at the time.
But, this can become a bad think if you have too many book readings pending. Due to reading books that I like --- philosophy, religion, and strategy type books, many of the books, in order to truly enjoy, requires somewhat of a deep thought process. And, at times --- a, what I call, "A taking of a piece of a type of thought and meditate on it for a few days", is what is needed. And, having too many books pending at the same time can take away from the full enjoyment of a book.