johnwang wrote:wiesiek wrote:ps
maybe Origami "segments of the body" is better description
But how to achieve that? Again, if we don't know how to do that, how can we prevent that from happening?
If somebody asks me how to break into the middle class the only answer I can give, based on my experience, is get a tech career in the air force and cash in commercially after four years. There may be other ways to do it, but I don't know what they are or how they work.
Likewise, asking that question about double weighting, the only answer I can give is the one that got me to my own understanding, which is train taijiquan earnestly and sincerely. Other disciplines might use other methods and names to describe the same phenomena, ideas, or process.
Going into more detail about the process, a beginning student is pretty much undifferentiated, full everywhere, after some bodywork, perhaps taiji, the student maybe learns to separate top and bottom and left and right.
So to visualize this, draw two perpendicular lines that intersect at your centerline on your hips. That gives you four segments to work with. Top Left, Top Right, Bottom Left and Bottom right. If the top left and bottom right are substantial, the top right and bottom left should be insubstantial. That's not double weighted. If the bottom and top left is substantial, and the top and bottom right is insubstantial, that might be double weighted.
Looking at it from that point of view of the first division of the body there is a go-to demonsration I favor.
A and B stand facing each other in a bow or wuji stance.
A pushes B's left shoulder with his right hand.
B yields, making his shoulder insubstantial, while placing his right hand on A's left shoulder and pushing.
If A does not make his left shoulder insubstantial, he will be knocked off balance and peeled away. The force he's exerting on B's shoulder will be returned through B's structure back to his own and it will push him out. He'll find he has no strength to push with and no ability to change to a more advantageous position unless he can resolve that double-weighted condition in his left shoulder.
There's a few things going on in that example, but double-weightedness is a component of it in two ways.
1: A is substantial on top left and top right, B is insubstantial on the left and substantial on the right.
2: A meets B's substantial push with a substantial body, allowing it to be affected, B meets the substantial push with insubstantial yielding.
If instead of the return described, A makes the contact point substantial, or makes the opposite (right) side insubstantial, then HE is guilty of double-weighting of the second kind there (at least) and will be pushed out.
If you understand I'm sure you'll find some inaccuracy there, but if you don't that should be a useful pointer to the idea. That's just describing four segments, you can analyze it down to like... 18 or so? The shapes and patterns get a little fuzzy conceptually for me still beyond the first four.