This book, while tackling a variety of neurological conditions that are interesting, is hit and miss with covering material that truly sparks discussion or better understanding. It feels like the author would benefit from more editing, both to reduce the meandering pontificating about the nature of the self, and to make sure questions the reader is interested in are answered. For example, the chapter on BIID, which was probably the most interesting chapter in the book, never goes into what about the identity as an amputee is essential to those who go with a surgical option: do they feel it is important to not wear prosthetics? What helps them present to the world as an amputee so that their internal identity matches their external identity, when so many who have amputations by necessity choose to lessen the appearance of their amputation in public. This is the kind of stuff you won't find out in this book. If neurological conditions like these are interesting to you, you'll be much more satisfied by reading source material by Ramachandran, whose first book on Phantom Limb Syndrome is fascinating and much more engaging.