According to this typology, the latter are more concentrated on socializing, on being active and building relationship with other people. The introverts are the opposite and their preferences are given to contemplation of thoughts they have, and to their inner states. Going further, both introversion and extroversion are two sides of the same coin because Jung’s explanation of the self states that everything and everyone is “composed” of the opposites. Jung’s contribution cannot be underestimated even though the mysticism of his school leaves lots of questions that require more studying and investigation in order to find more proofs to support his theory.
If everything had been taken for granted, it would be hard to imagine evolution and the whole humankind would stay at the same level of primitive way of thinking. Fortunately, it is not so that is why even the most genius ideas should be challenged and brought into a question. Due to this, Jung’s theory also has its weak points as well as strong ones. The main hardship is to investigate the verity of Jung’s theory in an empirical way and that is what Jung (1968) admitted himself, writing:
Probably none of my empirical concepts has met with so much misunderstanding as the idea of the collective unconscious. … The collective unconscious is a part of the psyche which can be negatively distinguished from a personal unconscious by the fact that it does not, like the latter, owe its existence to personal experience and consequently is not a personal acquisition.