Si is a prefernce for things that are absolute or unequivical in some way. For example a primary Si may well accept authority as being necessary to the way the world works, and thus obey it, but they will grade levels of authority and define how far it extends. An inferior Si may fail to do this. The authority may be seen as either absolute or repulsive. This can lead to episodes of hero worship or rebelion against authority. Extend this principal to other aspects of Si and see what you come up with.