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In the movie The Prestige, I realized that

Borden has a twin brother who he uses in tricks. Some kind of half life.

But I don't understand anything about that specific letter that Borden gave to Angier. He wrote Tesla on it. What was that about? Is there a possibility that

Tesla made a copy of Borden like Angier?

merged by Napoleon Wilson Jul 1 '15 at 13:55

This question was merged with Is Borden's true identity real, or another ruse? because it is an exact duplicate of that question.

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