Magicians yeah, and for the whole film it's an openly stated possibility that one of them is magically transporting himself across a room. Or that he's doing it with the help of a scientist who's first mentioned about halfway through. I can understand not liking the Tesla addition as too contrived (I disagree because one of the main themes is obsession, and he's also a nod to the old Arthur C Clarke adage about magic and science, but hey), but I don't take the criticism at all that the fantastic element is introduced without warning ten minutes from the end.