Once the theory has been assimilated, it comes time to execute. From the theoretical side, Extreme Programming(XP) is intuitively obvious. However, as we all know, theory and practice sometimes have only a passing acquaintance. Implementing and maintaining the principles of XP requires many traits, some of which are all to rare.
Since XP does not allow for the slipping of a deadline, it is sometimes necessary for someone to summon up a good deal of courage. It may be necessary to go to a supervisor and lay the cards on the table and say you can't have it all. Since those cards would contain a list of the requested features, this is guaranteed to make you unpopular. If that supervisor is one whose idea of motivation is to raise the level of fear and hours of uncompensated overtime, then it could be your last act at that company. That possibility is the one area where I have concerns about this book and XP in general. To implement it requires the commitment of all persons in the chain of command. If at any point someone at one level gives up the faith, then it is hard to see how it can be recovered.
This book is a story of how XP looks when it is being used as described. Although somewhat idealistic in its premise of forty hour weeks, limited overtime and keeping the goals within reach, there is no doubt that as described here, it does work. In fact, to most programmers, it sounds like the ideal work environment. For some time, I have pondered the choice of the word extreme to describe this mode of programming. After reading this book, I now understand why it is applicable. Using the XP method to build software requires extreme commitment from all parties to the endeavor. From the customer to the programmers up to the highest levels of management, everyone must believe in it.
In the end, XP will rise or fall based on the performance of those who adopt it. If they create programs cheaper, better and with more features, then it will be adopted. If not, then we will see a return to the locked in the cubicle mentality. However, it must be implemented in its entirety to be properly tested, and this book will show you how to do that.
