I don't usually communicate with the Devil or his advocates,
but I believe I stated in some part of the incomplete, quoted post that I didn't know whether it was just experience or the book. Unlike Tom, above, I really appreciated Ervin's banter. And, while he may have some things "scientifically" or "physics wise" a bit wrong, technically, he explains, if you read it carefully, that it's partly his way of understanding some of the things. It works for him. When you sell guitars for $30K you can write a book! He's an English major, and has a wry sense of humor, and, IMO is a pretty good writer. I found the books to be full of good information, and the end notes had as much info as the main part of the book. I like the books, and have read "The Responsive Guitar" twice, and will, most likely, read it again. It certainly is not the "Bible" of guitar making. That one isn't out yet, but I'm waiting. Right now it's on loan to a friend who builds using more of the "scientific method" than I do. And, by the way, Tom, I build only classical guitars too, and thought they related directly to the subject. I found his perspective as a Flamenco player to be very pertinent.