rachmiel wrote: You are afaiu talking about flushing out the detritus that gathers at the bottom of the V with a good long pure forceful flow at the top of the V. Right?
Not really, there is no need to force anything. It's about the purity of the "incoming". Normally those incoming experiences are contaminated by ignorance, which end up creating knots which are only adding up to the confusion. The sediment will dissolve with time, but from the moment you start purifying the incoming, all that was gathered stops influencing you.
Normally a result of the knot makes a loop and come back again as an incoming experience. That's the whole problem. Knots are normally harmless. It's the moment in which they become a part of the present experience which creates problem, right? Why are they used? Why, and how, do people reach for those knots? Because that's how the system works. We experience something consciously, and all the information and conclusions are gathered in the unconscious. Now when we experience something similar again in the future, we reach for those stored memories to complement our response. It would be great if we could make a choice here, be we cannot most of the time. This response is triggered unconsciously, and manifests as care, unease, stress, anger etc... We pick this experience up consciousness starting to produce thoughts on it. This way, we never know when will something arise in our mind. Being mindful enables us to recognize this arising. This is nothing but a simplification of Twelve Nidanas, but made to fit our issue.
Now, if you mindfully repeat the process again, not relaying on the past knowledge, you will remove the knot, or just change it to a new one.
The mother of all knots is ignorance, which enables the whole process, making it spin.
there is ultimately no V, no knot, no flow, no flushing, etc. Yes?
Depends on what you mean by ultimately. I can say that ultimately we don't know, and that's the proper answer to the problem of ignorance, as all knots are made up from the conviction that we truly know something.