This review is written by someone who knows absolutely zero about this subject. I enjoyed the book overall, and thought it achieved an excellent balance between technical content and ease of presentation. The book is divided into two halves; the first reviews the decipherment of various languages such as Linear B and the Mayan code, and is fascinating, while the second half concentrates on languages that still remain to be decoded. I found the first half much more interesting than the second, and I think that is because there is more of a story to tell. With the second half, there is a sequenced display of indecipherable scripts, but you learn little other than they look like tough nuts to crack. I must admit, I gave up before finishing the second half, but the first half more than compensates.