As long as a function is undifferentiated, moreover, it cannot be deployed in the conscious manner of a directed mental process that is truly under the control of the ego, and capable of being applied to tasks and goals: Without differentiation direction is impossible, since the direction of a function towards a goal depends on the elimination of anything irrelevant. Fusion with the irrelevant precludes direction; only a differentiated function is capable of being directed. (Jung 1971: 425)
