However fantastic it may seem, the society so elaborately described in this story has its seeds in ours. Just check the data.... The opening afternoon class for Mary Walden's ego-shift was almost over, and Mary was practically certain the teacher would not call on her to recite her assignment, when Carl Blair got it into his mind to try to pass her a dirty note. Mary knew it would be a screamingly funny Ego-Shifting Room limerick and was about to reach for the note when Mrs. Harris's voice crack