Interesting posts.
From those I've trained with and to those I work with.
When we talk of intent its something that is felt before contact is made.
When you meet someone who just stands there while you physically push on them from any angle with any force ... they don't move, don't use their arms or hands at all ... and at every point of contact that you initiate, you become off balanced ... No physical movement on their part, just relaxed standing there. Then when they actually do move, you cannot stop them because at every contact point, you're still being unbalanced. Now, the movement part can be faked with good external abilities. That's the easy part. It's the standing still that's important. That can't be faked because they aren't using timing, movement, body placement physics, etc. Trying to drop them using that "third leg weakness" theory doesn't work when they're just standing there in a natural stance.
Using the above examples the body has already changed because the "intent" of action from the other has been neutralized ie changed
before the physical action has arrived.
This means that an action does not have to have a lot of force behind it to move some one, or that forceful actions will move someone.
It depends on the level that one operates at.
For those who can feel, use and understand intent, its a different level allowing different responses and actions.
Depending on the clearness and focus of the intent that one can direct and use,
another person will react to it as shown in many clips that get questioned here.
Very much agree with developing, understanding, and testing it is one thing
this alone depending on teacher and method is the work of a few yrs or many.
This depends on how flexible one's mind body is in remapping what has been normal for ones
life experiences to something that is opposite or outside of it. Even with a teacher its not so easy to overcome
a lifetime of acquired habits.
Bringing it back into ones practice is another practice in itself.
I have often found that for many the intent of action often prevents them from directly feeling what "intent" is or feels like.