• If you move everything to the highest mental category, then all things are equal or the same.
• If you move things down the mental categories, then everything is different at some level.
• Learning when to move up or down the network of mental categories is learning how to use logic and reason.
• Use logic to maintain the integrity of categories by allowing for only right addition and subtraction.
• Use reason to add new categories when new discoveries, distinctions, and dualities are discovered to be real.
