I think he does not want to reveal everything, he does make a living with this stuff. What I find remarkable is how he sets up the scene and after a while, the people involved just seem to carry it further on their own. Makes me wonder about haunted houses, the same principle applies there, the scene is set by all the stories, the environment and emotions. Then enter a susceptible human and he might invoke the happenings himself.
If you like this, check out his Messiah one. Instant conversion to christianity and psychic readings. He takes on a couple of believers in the USA and lets them think he's the real thing while just using his party tricks. At no point they even wonder if it's a trick. Says a lot about the will to believe.
Two things I wonder when seeing him do his stuff:
1: How is he doing it?
2: Why am I not doing it?