Sure, but I'm not talking about how effective his teaching is. I'm simply addressing the technical definition of slope. I am perfectly fine with Khan teaching

Sure, but I'm not talking about how effective his teaching is. I'm simply addressing the technical definition of slope. I am perfectly fine with Khan teaching it as "rise/run". I thought criticizing this was silly on Karim's part. But then Khan was the one who came back to argue that his definition was correct and Karim's was wrong. I think Khan's wrong here and shouldn't have even engaged in such a trivial dispute...