I couldn't agree more. The way these matrices are handled is huge "swing and a miss" in terms of usability and common sense. Defining matrices with a known set of dimensions and what happens when they're multiplied in the standard way leads to weird results, and there's just no reason why it has to or should work this way. It flies in the face of every linear algebra textbook ever written, and I'm struggling to understand what viewpoint led to this syntax and behavior. What a waste.