The author expresses methodically, in clear language. He takes care of installing some concepts and laws of physics without using mathematics, deploy reasoning. Just try to summarize or reformulate sections of books to realize that every word is weighed, no sentence is unnecessary or redundant. Frankly, it's brilliant. In this sense, I understand the enthusiasm of the previous reviewers!
Alas, it is also what drives me to make a little flat.
Attempting the exercise of redrafting or even the return of any reasoning by Mr. Klein, I quickly stumbled upon a lucid observation: I do not have the intellectual and scientific knowledge and tools that would allow me to get an idea of the real value of the submissions of Mr Klein or even just to expose things in my own words.
Therefore, it is likely that previous commentators, even enthusiastic rave had a better foundation in physics that I and / or that great lovers of epistemology and philosophical deployments, they especially liked to go with the feel powerful clarity and the sometimes almost intoxicating fluidity of the presentation, regardless of their ability to really chew the content themselves.
The assessment of this book seems to me to depend in part on the formation and personality of the player.