Once or twice, I've picked up a book that looks interesting and started reading...de ja vu. It's usually a book that I didn't particularly enjoy the first time, and obviously it didn't make enough of an impression for me to even remember I read it. The book I'm listening to in the car is one like that. The ebook I did that with, I just stopped reading. It's actually taken me a long time to realize that I really don't have to finish books I don't enjoy. Unless they are for class or something
That being said, I don't remember "Timeline," but maybe it's one of those books for me...