I'm only halfway through Bertrand Meyer's 2014 book, "Agile! The Good, the Hype and the Ugly", but it's already proven its worth as a lucid, unrestrained appraisal of #Agile principles and methodologies. Here are a few passages that resonated with me... "#XP's insistence that [pair programming] should be the absolute rule [...] makes little sense conceptually, as it neglects the role of programmer personality (some excellent developers like to concentrate alone and will resent having to be paired) [...]"