(I, too, have seen these seemingly miraculous demos. However, every time I've stepped up, personally, and said, "OK, do that to me then" it's never, ever worked.)
it only means that they where not up to the task and that you probably are not to receptive to this type of energy. Nothing more.
Its part of a complete package, think of it as the ability to really feel a movement before it manifest. With out this it would mean that by the time you physically felt something it would be to late. touching such a person you would be chasing ghost and shadows.
Once understood weather contact or not it’s the same idea at work. A teacher I know doesn’t do it with people who have not been training in at least some type of art. Why?
For an untrained person their qi is very scattered in their body, for a demo it would require one to really use a lot of their own energy so much so that the other would be injured in the process. Sounds convenient but, I can tell you from first hand experiences what ever you want to call it tends to make one sick to the point of trying to throw up. With people who have trained depending on the training the qi may also still be scattered and probably the demo would not work to well.
Why waste time trying to show something that they know about? The skill is part of a total package that makes up the core training and ideas of a system work. The teacher tapped me twice I bounced out twice. The point I would say is can one replicate what is seen.
No one ever says this is how something is done, and then shows the same thing. Even in pushing demos where the person goes back a lot farther then would seem possible judging by the action. People do not say this is how it is done and then do it, they always cry fake or the other is just going with it or something. That is until they themselves a subject to it.
The story of one of the yang family and the bird, how would any one here explain the bird not being able to fly away from an open hand? Is it so simple that the bird just couldn’t push off to fly? I don’t think so but would like to read others views

[This message has been edited by bamboo leaf (edited 10-21-2005).]