For an experience to be memorable let alone transformative, the human brain has to be pushed out of default auto-pilot mode into conscious thought. And that push necessarily involves some level of discomfort.
If the point of making a 10,000-year clock is to get people to think longer term how do you design that experience so that it really does that? And one of the things that we we realized is that people really need to be able to interact with it. That they need to be able to make the moment they visit it their own. So while the clock does keep time all by itself with the temperature difference from day to night, it doesn’t actually update any of the dials, none of the chimes chime, unless someone’s there to wind it.