Seems like only a few hours ago that http://news.ycombinator.com/item?id=1883748 http://news.ycombinator.com/item?id=1883748 was asserting that the door-closing

Seems like only a few hours ago that http://news.ycombinator.com/item?id=1883748 http://news.ycombinator.com/item?id=1883748 was asserting that the door-closing button in most elevators is a no-op.