The first element of jenius is knowing what can be borrowed or bought without being taken or caught, so perfection is not getting caught. When you are talking about an oxymoron like "perfect crime", there is a limited context. Professor Moriarty is as big as Holmes in some circles. Where would the stories be without a villain like that? If you're talking about Star Trek, well, it's interesting that Data brought a semblance of interactive life to the professor, while Holmes only lives in books, unless you count Data as superior to Holmes.