Major categories can be separated by what variable they take.
The result is a hierarchy.
Time takes extension or the state of dimension as a variable, and takes immortality as an irrational.
Quantity takes quality as a variable, and takes organization as an irrational.
Complexity takes quantity and quality as variables, and takes perfection as an irrational.
Pleasure, on the other hand, takes ‘dimensional’ (the quality of dimension) as a variable, and takes ‘pain’ as an irrational.
International Society for the Philosophy of Architecture » Ethics and Aesthetics of Architecture and the Environment