''The most human of all qualities, Skinner suggests, is doubt, and as with UFOs over Dudley and losing his fortune he is quite seduced by the sheer incongruous possibility of faith. "I dislike it when religious people try to offer rationalist arguments," he says. "If you are saying there is a God, then all bets are off really. Why shouldn't there be angels? Why shouldn't a creature now manifest itself here with massive white wings and an ethereal glow and tell you something that changes your life?"