If this technique is so good, why haven't I seen it on TV?
As mentioned previously, there is a large psychological element to it. This means that although people won't see you, cameras will. Trying to perform the effect on television will only make you look an idiot. The people in the studio might not see you, but everyone at home will know exactly what you're up to. That's not to say I haven't been asked - several TV presenters who have seen my demonstrations have almost demanded that I appear on their shows, but I have had to decline. I am not currently at liberty to reveal their identities.