-  In our world, it is reasonable to say that the more skillfully an item is crafted, the better its quality becomes. A suit made by an expert tailor is higher quality than a mass-produced suit of the same cut. Similarly, you might expect that a sword forged by a master blacksmith would be much stronger than a blade forged by an amateur. 
-  This fundamental principle of the universe is different in Animus.  
-  In Animus, an item's quality does not depend on how well it is crafted. In Animus, an item's quality is ultimately determined by how well that item is taught its purpose. 
-  As items are used they are instilled with purpose, becoming better at what they do.  
-  This happens to all items gradually. 
-  Items which survive long enough tend to get more powerful.