[Yukio Shinoda] is probably master of the LED bubble display. She started out with an idea, back in 1994, of a column of water and an array of solenoids to inject air, making patterns in the bubbles.

Finally, he stood, walked over to an aquarium, and dropped the iPod in the tank,” Chaudhary recounted. He quoted Jobs saying, “Those are air bubbles … That means there’s space in there.

Finally he stood, walked over to an aquarium, and dropped the iPod in the tank. After it touched bottom, bubbles floated to the top. "Those are air bubbles," he snapped. "That means there's space ...