"The difference is YM had students simply go through the movements < in the logical, step-by-step progression of the system > without often giving them much detail, or investing much effort into students whom he felt not worth his time."
---Interesting that you have to edit this to make it say what you want it to say.
I haven't found the same logical thread connecting each piece of the system from start to finish in other versions so far. Been looking.
---Then you cannot say that WSL did NOT make these logical connections throughout the whole system himself.
I didn't say he only managed to teach it to WSL, for the 10 trillionth time.
---But that is certainly your underlying thesis and the way you come across on the forum....that only WSLVT is the "real" VT.
My position is not of absolute certainty, but one of evidence-based confidence, from a technical comparison of WSLVT to other YM derived WC, numerous student testimonials, the probability argument, and so on.
---You haven't made that technical comparison of WSLVT to other YM derived WC in detail, all in one place, for us to analyze. Other YM students will testify that they learned YM's Wing Chun fully.....like HKM or CST. Other people see the probabilities much differently than you do. So maybe it is time you accept that and stop being so dogmatic about things.