The book is written as a dialogue taken from a lecture, which has had minimal editing. This gives a good insight into Zumthors thinking and inspirations from the cuff,so to speak.

The disappointment is that there is not a lot of grounding theory or thoughts as well defined like those in his essays in 'thinking archtecture'. My feelings are that some ideas are repeatative but presented from a different perspective.

However if you are a true Zumthor fan, you would know that there is not a lot of published material so when its there! Get it!