"You'll notice the speed of the retaliation," answered the calculator imperturbably. "Even at 'stitching' speeds, it seems unlikely that they could have communicated with their home planets and received instructions in such a short time. Almost undoubtedly it was the act of one of their hot-headed commanding officers. Their next contact, as you certainly recall, did not take place for three months. And then their actions were more cautious than hostile. A dozen of their spaceships 'stitched' simultaneously from the inter-planar region into normal space in a nearly perfect englobement of the planet at a surprisingly uniform altitude of only a few thousand miles. It was a magnificent maneuver. Then they sat still to see what the humans on the planet would do. The reaction came at once, and it was hostile. So they took over that planet, too--as they have been taking over planets ever since." Bristol raised his hands, and then let them drop slowly to his sides. "And since they have more spaceships and better weapons than we do, we would undoubtedly keep on losing this war, even if we could locate their home system, which we have not been able to do so far. The 'stitching' pattern of inter-planar travel makes it impossible for us to follow a starship. It also makes it impossible for us to defend our planets effectively against their attacks. Their ships appear without warning." Bristol rubbed his temples thoughtfully with his fingertips. "Of course," he went on, "we could attack the planets they have captured and recover them, but only at the cost of great loss of life to our own side. We have only recaptured one planet, and that at such great cost to the local human population that we will not quickly try it again." "Although there was no one left alive who had directly contacted one of the invaders," Buster answered, "there was still much information to be gathered from the survivors. This information confirmed my previous opinions about their nature. Which brings us back to the stitch in time saving nine." "You're right," said John. "It does, at that. Buster, I have always resented the nickname the newspapers have given you--the Oracle--but the more I have to try to interpret your cryptic answers, the more sense that tagline makes. Imagine comparing a Delphic Priestess with a calculating machine and being accurate in the comparison!" * * * * * "I don't mind being called 'The Oracle,'" answered Buster with dignity. Bristol shook his head and smiled wryly. "No, you probably think it's funny," he said. "If you possess my basic ideas, then you must possess the desire to preserve yourself and the human race. Don't you realize that you are risking the lives of all humans and even of your own existence in carrying on this ridiculous game of playing Oracle? Or do you plan to let us stew a while, then decipher your own riddle for us, if we can't do it, in time to save us?" * * * * *