This book is like the bible of negotiations. It is so full of info to the extent of confusing you (unless you know what you are looking for).I had a problem with the exercises though, I expected a rather complete exercise with analysis of what the answers could be and a hint to to the best approach, etc.Instead I saw some interesting exercises that spin around certain situations that require a lot of effort and that's it ! I would have loved if more info about the negotiation framework were provided and linked to the exercise.