Because when I explore a topic and explain, I learn, including learning when I'm not correct. I still have study to do here, because what I do is very close to 3D Medusa, is simpler, so why is the technique not described on SW? Yes, if all the links are bilocation, they are all strong, and that is why I originally thought as you are explaining. I have more reading to do. Thanks.I agree. 3D Medusa is SBN limited to strong link chaining. The elimination rules are the same, only the chains may be extended more extensively (and easily) in SBN. SBN is an easier technique, but is not clearly described on SW.
So here, I came to a deeper understanding, which is why I discuss things.