Oh well - actually this book wasn't what I expected at all. So you can say I am even more perplexed after reading it, than I've been before. Here we have more a comparison of management techniques for projects, then for any help regarding the real title of the book. Still, it was interesting to read about reasoning when to choose this or that and what agile approach means for bigger companies and about the constraints on people. Actually I've never heard about the Cockburn Scale before, so I probably have to dig a bit further into it.