A paradox is a statement that is false when it is true and true when it is false. Paradox can occur whenever statements are self-referential. For instance: 1) This statement is false. 2) I am lying. 3) Please ignore this notice. 4) It is forbidden to forbid.
There is no irritation in the system’s environment and there is no transfer of irritation from the environment into the system. It is always a construct of the system itself, always self-irritation–albeit occasioned by environmental effects.