The first thing I thought when I heard about this book was, “finally, someone is going to deconstruct the insanity behind the selfie and what it’s doing to our brains (it can’t be good, can it?), but that turned out to be just one part of a sweeping history of identity, as seen through our relationship to what could be our most culturally loaded body part (and wow, that’s saying a lot). Throughout, Helfand’s insights are accompanied by gorgeous photographic examples, and the two elements dialogue, explaining each other the way a fantastic lecture might. It’s been on my coffee table for a couple weeks and has already hijacked two conversations, diverting them toward Narcissus, or creepy facial recognition software, or celebrity plastic surgery, or, well...ourselves.