Axles creaked and groaned. The wagon-wheel dynamo began to spin, its low whir becoming a moan and then a whine as the monks strained and grunted at the drive-mill. The guardian of the dynamo watched anxiously as the spokes blurred with speed and became a film. "Vespere occaso," he began, then paused to lick two fingers and touch them to the contacts. A spark snapped.