A discussion of thinking about how spaces and furniture are used seems more useful when it connects an idea with something easy to picture. A room works differently when its layout reflects the activities people actually do there. It is the kind of question I would keep in mind when thinking about Phongcachhiendai and everyday interior design. I can imagine different responses depending on the situation, which makes the question more interesting. What would you observe before deciding which part of a space to change?