something clicks. At that moment you are flooded, not only with the name of the person in the photo, but with many other details about who you are in relationship to each other. These systems are vast in their detail. However, each seems to follow the Hebbian principle: neurons that fire together wire together. From a neuro-science standpoint, therefore, remembering is essentially the process by which neurons increase their probability of firing together. Keep this in mind as we consider how changing our