The element of time changes the importance of the object and the act. Initially it is significant, essential, imperative that it function in a certain manner, that it perform certain tasks, that it remain in possession for future use. The tool is a means to this essentiality, but over time the importance diminishes, it is forgotten, the object becomes impotent, severed from intention. The essence of this change lies not with the object but in the human mind, without the cerebral connection the item is returned to the earth, its function irrelevant.