If we lose our memories, are we still ourselves? Is identity merely a collection of electrical impulses? What separates us from animals, or from computers? From Plato to Westworld, these questions have fascinated and befuddled philosophers, artists, and scientists for centuries. In The Forgetting Machine, neuroscientist Rodrigo Quiroga explains how the mechanics of memory illuminates these discussions, with implications for everything from understanding Alzheimer’s disease to the technology of Artificial Intelligence.