 Śaṅkara also incorporates the persistence argument to show that one term (clay) is independent of another (pot)—clay is more real based on independence in causation. The pot form arises out of the clay cause, is sustained by clay, and resolves back into clay upon its destruction. The pot depends on clay for its being. Its form and mass possess no objective existence apart from its clay substance. Therefore, the clay is more real based on a hierarchy of dependency. This hierarchical relationship reveals an asymmetrical dependence—pot form depends upon clay substance for its being, but clay substance does not depend on the particular pot form. Śaṅkara draws several important conclusions from this: