As important as the introvert-extravert parts of the personality are, we need to remember that it is the interaction of all parts of the personality that makes us who we are and affects our interactions with others. A goal of Jungian therapy is to help the individual integrate the parts of the personality. We all have all the parts within us – we just don’t use some of those parts.
How we use the parts is what differentiates us. Introverts know they view the world differently. Extraverts may have trouble understanding, but introverts know. What they may not know – or understand – is the impact of the other functions.
A big difference is a result of the Thinking/Feeling function. That is how we evaluate information. Feeling doesn’t mean “emotion” but “is it pleasing or not.” Thinking types feel; feeling types think. But they do it so differently that the terms don’t have the same meaning to the opposite. Thinking types are going to focus on facts while feeling types will be asking “do I like it or not?”
If you add the way we get information (sensing or intuiting), it is a wonder that we can communicate at all. A sensing thinking type may notice a house on a hill, the sensing feeling type will wonder who would use that color on a house, the intuitive thinking type will be planning how to improve the scene, and the intuitive feeling will write a story from the house’s perspective.