PREFACE   

A good friend of mine has been telling me for years that if something is so complicated that the whole thing cannot be viewed once, or if it is subject to dramatic change, then you must have explicit descriptive representations to be able to manage it. I have heard John A. Zachman make that assertion in countless conferences and training sessions regarding the value proposition of enterprise architecture. However, the reality is that people still seem to think that they have their enterprise under control. There is a widespread denial about the complexity of our enterprises. We do not want to accept that our enterprises are in fact complex adaptive systems, with emergent behavior arising from the interactions of not only internal ...

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