As an aside, I have seen magicians arguing that the teleportation effect presented in the prestige would be terrible to do on stage because there is only one lo

As an aside, I have seen magicians arguing that the teleportation effect presented in the prestige would be terrible to do on stage because there is only one logical explanation (you used a double) and thus no mystery. Paradoxically, the fact that it is the only explanation is the thing that makes it a great effect in the Prestige...