You apparently weren't listening - I said that, unless he used trick photography, or actors, then there is no natural explanation for how he caused a bent card (or merely the "bend" itself) to transfer from the middle of a deck of cards to the top of the deck, which I happened to see him do on television. Again, perhaps it was "trick photography", with some fancy editing, but if not, there is no natural explanation (use the process of elimination, and common sense reasoning regarding physics, etcetera).