If we compare agile development to agile aircraft, the aircraft is inherently unstable, but has a really good feedback system to spot when it goes off track, and make the appropriate adjustment. This ability to make the appropriate adjustment is in short supply, and is, in my opinion, a major cause of the negative responses we get to agile approaches.More about Paul and his work can be found at his website. Be sure to read all of Paul's InfoQ interview.
InfoQ Homepage News Interview: Paul Oldfield on Doing Agile Right