Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Lots of fluff

If you are thinking about reading this book then PLEASE consider reading Brian Greene's "The Elegant Universe" instead. It does a much better job on string theory and it is more current with the latest scoop on the second superstring revolution.The second half of Hyperspace is light on content. There is a lot of filler. After reading it, I thought that it was because there was not much else in the way of superstring theory advances. Hyperspace is truly outdated because of its '94 print date. The second superstring revolution began in 1995 which means you are missing out on a number of recent advances. Greene's book gives you the full history of string theory plus the most recent work which was much more fufilling.