Google has become our external hard drive. In a recent experiment, college students remembered less information when they thought they could easily access it later. We used to rely on friends and family members for this method of memory outsourcing, remembering who knew what rather than the information itself.2 But now, Google is the friend with all of the expertise. If the sum of all knowledge is constantly available in our pockets, is it any wonder that we’ve stopped bothering to keep it in our heads?