What time do they specifically describe the Norman Door? I skipped around in the video and I got the general point (doors, like everything else, should make invalid options not look valid), but I couldn't stand the video's style enough to sit through the whole thing.
All the confusing doors they show are "Norman Doors":
> A so-called “Norman Door” has design elements that give you the wrong usability signals to the point that special signage is needed to clarify how they work. Without signs, a user is left guessing about whether to push or pull, creating needless frustration.
