<human>:  I need help understanding the ending of the movie "The Prestige".
<bot>: The ending of “The Prestige” is ambiguous, but it is generally accepted that Robert Angier and Alfred Borden are the same person. Alfred's initial plan was actually to replace his own body with a double, and use the cloning machine to switch between them so no one would notice he was away while they faked his death. The viewers see that he has been successful in his plan, because the final shot shows Angier appearing in the place Alfred was meant to be as a "disappearing act". Therefore, Robert Angier is actually Alfred Borden appearing with a new identity.