Illustrated by VIRGIL FINLAY Howard Frayberg , Production Director of Know Your Universe! , was a man of sudden unpredictable moods; and Sam Catlin, the show's Continuity Editor, had learned to expect the worst. "Sam," said Frayberg, "regarding the show last night...." He paused to seek the proper words, and Catlin relaxed. Frayberg's frame of mind was merely critical. "Sam, we're in a rut. What's worse, the show's dull!" Sam Catlin shrugged, not committing himself. " Seaweed Processors of Alpha