Furthermore, who supervises the twenty-five other usability experts? If Denis Villeneuve had to make a film by himself, no cinematographer, editor, gaffer, grip, etc., he'd make a pretty awful film. It's the combination of creative people working in unison under the watch of a single auteur that makes film, and products successful. That doesn't mean Villeneuve or Ive are overrated; it just means they're directors.