Hi this is a wonderful thread to illustrate how we can be tricked, no matter where that trick might actually come from.....
However look at the below 20 minute clip of Keith Barry who is an illusionist and openly admits it, however it doesn't take away one bit from what he can achieve. As the video goes on it is trully magic !!
One thing he mentioned though which I found stuck in my head, he said if you are not trained in the art of deception you will always be looking in the wrong place.
Have fun
http://www.ted.com/talks/keith_barry...ain_magic.html