The screen hums cool against my small palm. I slide my thumb across its smooth surface, watching tiny dots dance into shape. They make a picture of a big robot standing on a cliff, looking down at the ocean below. Its eyes glow red as it turns and walks away, leaving a trail of numbers that move quickly like cars in a race. I tap the screen where the robot’s feet are, hoping something will happen. Nothing does. The numbers keep moving, and the picture doesn’t change. I try again, pressing harder this time, but still nothing. The screen stays the same, showing only the robot walking away until it disappears at the edge of the cliff.