Instruct: Classify Amazon reviews into positive or negative sentiment
Query: XP considered harmful

The XP approach to development is just another weak rationalization to explain why hacking is an OK approach. Design doesn't enter in until you've hacked yourself into a corner. While making bold claims, such as the claim that the cost-curve for early versus late changes to a product is actually flat (at least using XP), the key claims relied on in the book are never verified or quantified in any manner. Another annoyance of the book is that it seems to talk about *all* software development, but in actuality really only ever deals with issues of concern to IT organizations. Granted, that is a huge chunk of the industry, but the author never so much as acknowledges other application areas. There are some good things in the book, but only a very experienced engineer would be able to sort them out from the rest.