I think we are filtering right now. No instructor of Systema should add on anything and say "This is Systema". If you have previous martial experience - you might pass that along to a friend. BUT - its to be made clear that it is NOT Systema. To a general student, dont do so in any class - for it is easy for a beginner to miss the origins. Comparisons for discussions sake are necessary. Dima, you and I know that many times just the difference between Russian words spoken and translated into english...kinda modifies what was best expressed in the native tongue of the speaker. Subtle meanings and nuances lost in translation. It is amasing to listen to Vlad sometimes struggle with the essence of what he is trying to convey in english - and so often it is his facial or subtle body english that imparts the 'feeling' of what he is saying. If a person comes to me and says "This is goldenbell iron sweatpants" and its just like what you do in taking a punch....I will ask to punch him - just to see what he is trying to demo. Then he can punch me and I absorb our way. I know I can see where the differences lay, and might even..maybe...find a certain similarity on a few points. BUT - they are not the same and never will be. Maybe I seem too 'liberal'...but I have never found any difficulty in keeping my previous m.art types seperate. I can still do a round kick from ShotoKan, or Moo Duk Kwan, or Muay Thai, or even Savate. They are not the same - but are roundhouse kicks just the same...but not the same kick at all. I can deflect a strike with a B-G 'turning fan' or a Systema deflection. They both deflect - but are NOT the same thing. Paul, I cant envision when an instructor could fill in any gap by adding another arts principles to Systema. That would not be Systema anymore. I dont personally know any teachers of Systema that do this gap filling. I have met many students that attempt to do so, though. When I am contacted, for example; to teach a seminar - I speak to the host about what they want to present. Sometimes it is pure Systema, other times - they want a mix of Systema and my other life experiences. In the former - it is Systema as I was taught it - chapter and verse. In the latter, I might include - say, a something out of my personal bag of experience. An example might be how to use a thumb jab to break a person out of a bear hug...and pulling his shirt up over his head as recoils from the thumb. The first was learned from Hatsumi, the second - from inmates fighting on Rikers. (Dima - its alot like the way hockey players use their opponents shirt against them). Now, these things were not directly specifically taught to me - chapter and verse - by Vlad. But they fit nicely into the dynamics of The System. Would you feel I was bastardizing Systema when I demo this and teach it? OR - are we attempting to be so exact that we try to be Vladclones? If so, we will fail. Misha and Vlad hardly move alike. But the principles of Systema are very clear in their differing movements. But, I digress. Perhaps I am more speaking about a language. In communicating with others who have m.a. language/movements different than ours...one can explain certain things superficially. If you speak more than one language, and are fluent in it - then you can converse more fully. Back to Furtry - Dima, when I travel around Brooklyn, I sometimes meet a person originally from Russia...maybe asking directions, for example. I know that they are speaking Russian in their minds...and trying to communicate with me, using a mix of russian and english. I think about what they ask - and in my poor mix of russian and english - we both eventually get the message across. It does not change the purity of their Russian, nor my Brooklynese. In fact, we might have exchanged a few words new to each other. If anyone thinks I am advocating inclusion of another arts methods to ours, then we ARE filtering here. The System needs no inclusion. THATS WHY I GAVE UP OVER 30 PLUS OF PREVIOUS MARTIAL STUDY TO 'DO THE WORK', as best as I can. As said previously, I have little concern that Systema will be corrupted. We have the source alive TODAY. REAL Systema is there for anyone who is willing to do whatever they must to find it. If a person buys a tape of Vlads - and trys to punch it into the dynamics of whatever art they study - that is simply not Systema....but even a few things added from Systema can help round out their experience of martial movement. By the flip side, it doesnt corrupt your understanding of Systema to see what other arts contain, if you wish. Anyone I know as certified in Systema has always shown the ability to filter very well. I would suspect that it is one with less real time experience that says "yes, we do" - when we "dont, at all". On forums, the posters are usually unknown to each other in real time. A guy could easily write about the "yes we do" - and not know Vasilieve from vasaline. ANY reader has to take any post from a person they do not know...with a shaker of salt. Including all reading this that do not know me. BUT, Dima. You and I DO know each other. And I feel I understand what you are saying, and although I agree in Systema staying and being expressed in the purest of terms....we cannot do anything but comment when someone is way off base. If we choose to. REAL Systema understanding is available....forums comparisons to anothe rart will allways happen. ONLY real time experience is the yardstick. And be thankful that we are doing 'this art' now. In time, it is just inevitable that it will find those that will attempt to alter it -- maybe soon, maybe in a hundred years..but that happens to all m.arts, it seems. Even then, I still feel real Systema will still be available to those that seek it out. Enough of our time -- I have to go change my filter. LOL!