" While we remain in our invisible space-ship, the inhabitants of this world cannot see us. Prepare to take notes now in preparation for your final exam on the subject Alien Creatures and Their Actions in Given Situations. Notice below us the female of the dominant Species. She is with her child.... " Clutching Robbie in her arms and holding him tight, Helen Thompson sat down wearily on the ground. The cold and dampness was all around her, boring through the thin cotton dress she wore. Her flesh