“Long before children were able to create, edit, and curate images of their lives,” she writes, “they were already doing so on a psychic level.” Freud called these images “screen memories”—no pun intended—and he thought that we used them to soften or obscure painful experiences. Humans have always tried to cope with the difficulty of memory, to turn it “from an intolerable horror to something which is reassuringly innocuous and familiar.” Social media just makes us more adept at it.