In a quiet, meditative space furnished with just a desk and chair, there lies a book on the desk—a digitally projected book. Its pages “turn” when tapped with a pen that lies nearby. Touching individual images in the book also produces other results: Tap one page, for example, and you hear the names of Japanese pictograms spoken out loud; a small lamp on the desk turns on when you touch a picture of a light switch on another page; a door in the wall opposite you swings open for a split second when you touch it with the pen, revealing a laughing, naked child.

Like the book, the door is a digital