If i would think that everyone who says: My style is teh true style, would ruin TCC for everyone, then there would be just as little to debate/discuss, as your claim. Forcing people into arguments, which will gain nothing only increase frustration and resentment towards other styles. And no offence mate, but i do pickup some of your frustrated vibes here and there. You see things one way, accept it, and accept others view aswell. Last time i checked going against the flow, aint tai chi. And also to answer your question: Grandmothers need to defend themselves, being the main target of simple muggers of course.