Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Boring beyond belief!

Only by sheer persistence did I get half way through this stinker. I found myself saying aloud, "Just get on with it for heaven's sake...." If listening to two self absorbed scientists talking talking talking talking about the possibility of time travel is your cup of tea, then this is the book for you. However, if you'd like something interesting to actally HAPPEN, then maybe you might want to pass this one up. I couldn't get it off my kindle fast enough. What a waste of my time, and of space on my device.