When Jacob picks up that phone in the cave, he is propelled (we join his personal point of view, seeing directly through his eyes, or at least picking up a momentary rectangular cross-section of his deep-space picture-brain) back to the car that flattened the dunes, first seen when he danced with the bees and visited the Garden of Eden in the Space Shuttle.     My reverie was disturbed by the sound of a telephone ringing in the cave.