She reads the book backwards; it doesn't matter what direction she reads it in. The book is a parody of English (the novel he's written is a continuous sentence in repeat): isn't the book essentially shined? He's trance-typed an introductory sentence taught to boys as an initial structural device while he shines like Danny entering other time-scales. It's an early learned phrase: the same as HAL who was taught "Daisy" as first sentence lessons. And wittily, Kubrick uses Jack Nicholson's own early remembered nursery school sentence. He regurgitates it into a typewriter for the entire film without speaking it once. A mirror to 2001, which subordinates Jack as near death.