This is an excellent book that could have been much much more. Our current ability to create a world of likenesses and copies has changed the way we look at the world. And this well written work discusses just how many issues, from twins, to copied documents, to ethnolographic film, are informed by our search for the "real" in a world of "copies." Yet this work never becomes anything more than a well written, entertaining series of well-selected anecdotes. The philosophical issues, the absurdity of any idea of "identity" or metaphysical "difference," in a world in which identities are fabricated, is never touched upon. This work could have been a philosophical tome, changing the way I thought; unfortunately it only made me chuckle at how people have been confused by twins