For the full story, see my comment at: http://news.ycombinator.com/item?id=3248552 http://news.ycombinator.com/item?id=3248552 tl;dr: managed attributes and fi

For the full story, see my comment at: http://news.ycombinator.com/item?id=3248552 http://news.ycombinator.com/item?id=3248552 tl;dr: managed attributes and fine-grained model attribute events make life a lot easier and change the boundary between model and controller.