I think part of the "Extreme" was also to "turn the practices up to 11" - eg. Code Reviews are good? Then we'll have continuous code reviews thru Pair Programmi

I think part of the "Extreme" was also to "turn the practices up to 11" - eg. Code Reviews are good? Then we'll have continuous code reviews thru Pair Programming. Short Development Cycles are good? Then we'll have cycles that go on the order of minutes or even seconds (Red/Green/Refactor). Customer Involvement is good? Then we'll have them actually sit with the dev team. etc.