Igor grinned and pointed at two skull caps, joined to the chaos of the machine by curls of tubes. "One for each person," he explained, and traced a twisty curvy path, that went through at least two bell jars of water and a flame. "Their minds are drawn out through here, cross over here," he tapped an impossible tangle of wires, "and are inserted into the other person's head. Simple! All we need to do is attach it and turn it on."