"James is 7 years old with non-verbal autism. He never engaged with story time. He would stim on the tablet’s home screen or smash the device when ads popped up. After introducing a Muki Books interface with a single yellow button, James learned that pressing the button advanced the slide. Within two weeks, he was independently reading (listening) to 15-page social stories about brushing his teeth. For the first time, James demonstrated sustained joint attention for 10 minutes."