I dont know what kali you have seen.

Our arms literally cut things. We keep them sharp by cutting coke cans in half, trimming the edge off a penny with our razor sharp elbows, or cutting leather into thin strips. This process relys heavily on the six harmonies and 3 chi centers.

Again, this is something only kali has. I know as a XY guy you cant understand, or think its all smoke and mirrors, or that you have it too, but you really need to study the body and understand our theorys of structure and body segments to understand.