Every human being makes purposeful decisions. We choose one thing instead of another, and these choices have consequences. For example, parents can choose to read with their children, or choose to put them in front of a television. This choice has significant consequences for a child in learning to be human. In the context of a shared book, a child learns to communicate by interpreting words, gestures and body language from the reader, and expressing himself in words (if he is old enough to speak), and through his own gestures and body language.
In addition to learning to interact with others, he is being initiated into a way of being in the world. If reading a book together is an isolated encounter, the impact is not nearly so great as if it is repeated; hence the primacy of repetition. Both the single encounter and the repeated practice of reading books are part of initiation. Each communicates something about the value of literature, words and interpersonal communication; resolved repetition shows that we deliberately cherish something.