Lots of detail, but I just could not get through it. The material was interesting but there was so much detail it was easy to miss something, leaving you confused a couple of pages later. If I had more time to read at each sitting, I may have enjoyed it, but it was hard to get into it the book when I only had time to read 5-10 pages at a time. Rating is based on what I did read of the book. I may try to read the e tire book at a later time.