for security reasons; their laboratory names, such as Sykin Supcel AA-87, are a sort of code which designates their capabilities to their instructors and teammates." He pressed a button on his desk. "To establish their complete normalcy, you might like to meet Arna Matt A-94, who happens to be waiting in the next room." A door opened. A girl stopped on the threshold, a picture of poised surprise. The men looked at her appreciatively. "Come in, my dear." She moved to the doctor's side, lithely and with an easy grace. The shining metallic cloth of her brief uniform rustled in the silence. Many breaths were expelled at the same time, and she repressed a smile. Dr. Wilton introduced her. "You will notice—" he coughed "—you have noticed," he continued broadly, "that Arna possesses several attributes." There were low murmurings. "But the single A in her number indicates that she ranks at the top of one field, and the number itself means that she is the ninety-fourth to become a trainee in the program which develops these unique humans; her code name reveals that she possesses Awareness in Mathematics—which is to say that she somehow immediately knows the answer to any mathematical problem presented, without having to consciously calculate or even think about it. Her particular gift was known on Earth as far back as the Seventeenth Century, but it has always been extremely rare and relatively undeveloped." "Can she talk?" questioned a voice good-humoredly. The psychologist chuckled. "Say something for the boys, Arna," he invited. With the timing of a video star the girl parted her lips provocatively, leaned slightly forward and then, when expectancy was at its height, said "Boo!" Friendly laughter echoed through the paneled room, coming from all but the Venusian. He rose stiffly. "This is all very well, but we're here t'get all the dope on Sykin Supcel. Aren't you holding out something?" Dr. Wilton looked at the man squarely. "Yes," he said softly. "Yes, I am." His gaze swept the others. "The interview is terminated, gentlemen—I hope your news stories will be sufficiently popular to make your trip worthwhile. Your lapel cameras and their eyepieces will be returned as you enter your 'copters." The Venusian was the first to voice his thanks, with a ring of sincerity as true