This, I think the width of your mouth is a data-point which is stupid and exploitable, after all you can contort your mouth in a dozen ways without opening it o

This, I think the width of your mouth is a data-point which is stupid and exploitable, after all you can contort your mouth in a dozen ways without opening it or smiling (see my other post in this thread). And that doesn't even take into account the use of things like lipstick to make your mouth seem wider ...