"Some officers have had a difficult time dealing with the fact that she is a genetically perfect being. On her planet, Ilyria, excellence is the only criterion that is accepted. She is technically designated as being the best of her breed for the year she was born." "I see. She therefore would receive the appellation 'Number One' even if she were not the executive officer." "You have it." That backstory for Number One is from Vulcan's Glory--the one Star Trek novel that was written by D.C. Fontana.