When we rotate a disk, can this process be fully explained by looking worldlines of the particles the rotating disk is composed of, hence their x,y,z,t position "as time passes", or do particles have some kind of "facing direction", hence also spin(not the quantum mechanical notion of spin) while the disk is rotating? An analog would be a planet rotating around the sun. It could rotate in such a way, that one side of the planet would always be facing north(once we defined where north is) or alternatively, the planet could rotate in such a way that the side which formerly was facing north always, would point towards all directions on the plane when doing a full orbit around the sun. What would be the quantum mechanical view on this? Is there any notion of "facing towards" in QM?