This is a good question. I will use it as a closer.
EDIT: I remember that in D+M's dangerous disc1, he performed aces and he did a deck vanish. But after his performance, he just took the deck out in front of his audiences.
So Wrong! I will hate magician forever if I was that spectator or the audiences.
We are supposed to bring our audience happiness, amazement and unforgettable experience! But that guy ruin everything!