Steve
Mostly Harmless
I don't know about koryu, but I can respect that there are many reasons to learn an art. I have said in the past that I define traditional styles as those where the effectiveness of a technique is less important than how the technique is performed. nothing wrong with that at all. Doesn't mean a technique is ineffective. Rather, it means that efficacy isn't th number one concern.My understanding of the koryu approach (from what Chris Parker has said) is that they maintain the tradition and principles, but don't attempt to maintiain it entirely without change.
I never said something becomes irrelevant in the modern world because it is maintained. I said if it is maintained too rigidly, the human inability to pass it along exactly will cause it to degrade (incremental loss unaccompanied by incremental gain). Given enough degradation, it may become irrelevant for the original context.
The comment about what was held back (or even forgotten) 3 generations ago is actually my point. Something did not make it across that gap, guaranteed. If nobody seeks to tweak the system from one generation to the next, then nothing is replacing what is lost. In some cases, later generations are likely to "discover" material that once was part of the system, but was lost in transmission. It was found once because it fits within the principles of the art, so if it's effective, it will likely be discovered again for the same reasons.
I can easily imagine that a traditional art may value a faithful transmission of the entire system over all other concerns. There's no wrong or right in that. And in a style like this, lineage may matter a great deal, as it speaks to authenticity.
This is just one legit reason lineage matters.