XP Explained Cover

This week the re-read of Kent Beck and Cynthia Andres’s Extreme Programing Explained, Second Edition (2005) tackles Chapters 20 and 21.  Chapter 20 is a discussion of applying XP.  The short version is that there is no one perfect way to apply XP, which dovetails nicely with Chapter 21 which addresses the concept of purity and certification.  IF there is no one perfect way to apply XP, there can’t be a litmus test for XP purity. (more…)