"Stone Rubbing" dissociate the act of touching and rubbina a stone to make a wish from its social context and show it superticially. On a stone borrowed only from materiality, human hands perform the usual superstitious action.

What differs from superstition is that the material called stone was not artiticIally refined or taken to another place.

Let's completely separate the rubbing of our hands from its conventional meaning or purpose. The action that loses great power of "meaning" looks strange.