Crayley stood thoughtfully before the huge screen and watched the fingers move. Metal fingers, five on each hand; each hand attached to an arm, and each pair of arms connected to a silvery sphere that sat atop a four-foot pillar. Within the pillar, micro-relays ticked and chuckled, sending delicately measured surges of power here and there through silver nerves to metal muscles. Responding, the hands built an energy generator. And when they finished, they built another. And another. On and on, m