Enoch stood on the upperdeck, waiting for his chests and bags to be lowered into the longboat. As he often did in idle moments, he reached into the pocket of his traveling-cloak and took out a contraption that looked a bit like a spool. But a poorly made one, for the ends of the spool were bulky, and the slot in between them, where the cord was wound, was narrow. He unwound a couple of inches of cord and slipped his finger through a loop that had been tied in its end. Then he allowed the spool to fall from his hand. It dropped slowly at first, as the spool’s inertia resisted its tendency to unwind, but then it picked up speed and plunged smoothly toward the deck. Just shy of hitting the planks it stopped abruptly, having unwound its meager supply of cord. At the same moment Enoch gave a little twitch of the hand, and the spool reversed its direction and began to climb up the string.