"Novelist and philosopher Umberto Eco once said that the list is the origin of culture. But his fascination with lists and organization grew out of his longtime love affair with semiotics, the study of signs and symbols as an anthropological sensemaking mechanism for the world. In bridging semiotics with literature, Eco proposed a dichotomy of “open texts,” which allow multiple interpretations, and “closed texts,” defined by a single possible interpretation. Since semiotics is so closely related to language, one of its central inquiries deals with language acquisition — when, why, and how children begin to associate objects with the words that designate those objects. Most children’s picture books, with their simple messages and unequivocal moral lessons, fall within the category of “closed texts.”

In 1966, Eco published The Bomb and the General — a children’s book that, unlike the “open texts” of his adult novels with their infinite interpretations, followed the “closed text” format…