Are you curious to know why the word Extreme was used in ExtremeProgramming?
From the Preface of ExtremeProgrammingExplained: "So why the "extreme" in the name? Because XP takes commonsense principles and practices them to extreme levels."
In Kent's words: "When I first articulated XP, I had the mental image of knobs on a control board. Each knob was a practice that from experience I knew worked well. I would turn all the knobs up to 10 [i.e., to their extremes] and see what happened."
Some view the use of "Extreme..." as a now-dated use of a prefix that was very trendy at the turn of the century (the book was published in 2000). Here's a choice sample of some "extreme" things:
If ExtremeProgramming is not extreme as in extreme sports, extreme dating, etc., what's with IronGeek?
See: DontCallItExtreme i will read this seriously :)