A pretty woman changes over time; her shape becomes, let’s just say, different. If you are attracted by the shape, you must know this going in. if you try to cling to that youthful shape, you will be sorely disappointed. I might point out that you too will suffer the same fate. The Dao is the same although in the case of the Dao, it can change shapes in milliseconds, if not faster. The fastest camera in the world cannot capture a still photograph of the Dao; it is always moving, always changing shapes.