The preparation time to throw chi and or the requirement to strike two to three points precisely, and in sequence, in order to make the body feel as if it is in trauma causing it to drop Blood Pressure and causing a knockout/faint is not doable in a Real conflict.
Here is a clip of Leon Jay,(Wally Jay's son), doing a chi throwing demo,and then doing it to scientists.
http://www.youtube.com/watch?v=JM_qg5d1YGIWe see that it does not work on the scientist.
Why ?
Well George Dillman then says "It does not work on Non Believers",oh my.
It does not work on those who know how to negate the chi by:
Putting the tongue to the roof of the mouth
Raising your big toes
Raising one big toe and pushing down the other.
The important thing is "It does not work on Non Believers"
That means that it works on students,who have been trained/forced to believe,by being struck over and over until they go down.
We can conclude that it will not work on most of us non believers.
LOL
Stick to learning how to make strikes to workable ,doable, vital points like throat,chin,jaw,eyes,joints.