I'm a bit confused about how socionics defines introversion and extraversion. Why should being dominant in an introverted function make you an introvert? Would being e.g. an Si subtype of ESE make you less of an extrovert than if you were an Fe subtype of ESE? Are the introverted functions actually 'introverted' by and of themselves, or is it the specific order of all the functions that point to I or E?