This "short" film is not short. In fact, I would only advise watching the entire thing in real time if you needed some quality meditative time. That said, the skillful yet repetitive movements of this sign hanger are captivating to watch.
But there is also a subtle story line and a surprise ending. And one of the most fascinating parts of this movie are the reactions (or lack thereof) of the people all around waiting for their trains. LINK