he may be the daddy of scrum but this book has nothing to do with it;
it is a self-help book I couldn't force myself to finish;
comparing scrum to tango - this is the level you have to expect in this brochure;
not recommended for PMs and tech people, only if you lack self-esteem or you need something to cheer your up.

I always wanna clean my hands after books like this one - there is something dirty in writing books like this - shallow, narrow-minded, about everything and nothing at the same time, far from reality and operating with abstract constructs. These constructs are so generic that you can take a random process fo the universe - this metaphor would be able to describe it.

That's bad, guys.
Avoid it by all means