This paragraph about the door in the station is astounding:<p>> The design model here is that the door is motion-sensor-activated. But the system image communicates to the user that it’s button-operated, so the user ends up with the wrong user model. Worst of all, the designer of this door went to lengths to create this bad system image. They deliberately designed a piece of plastic that looks like a button, aimed the motion sensor at it, and even added a light inside the button to highlight it more prominently to the user. They should have read Don Norman.<p>I think what happened is the door was motion-activated, but people were failing to activate the sensor. But then, instead of drawing attention to the sensor, or adding a real button, they made a fake button that is vaguely in the area that the sensor points at, to try to trick people into moving their hands in the sensed region.