I am in doubt as to what a personality of a person being these two things
since many people say that it is very rare
since many people say that it is very rare
Extraversion meaning low assertiveness in this case? To be anecdotal, my dad is an ISTP 8w9, and while not strict or active like a TJ (especially ExTJ), can get serious, aggressive, and assertive that quick. Like he gets often impatient and annoyed with my ESFP brother's silliness and nuttery. My father isn't a socialable (in a sense of a socialite), either, and would often watch television in his room just to be undisturbed; and he is only talkative with friends or family only and not so much with strangers.Mostly they aren't. Eightishness and low Extraversion don't mix.
Not just assertiveness, though that is a part of it. Extraversion is a thing that blatantly exists, right? We see that some people just keep going and going and do stuff nonstop, socialize a lot and can't stop talking, enjoy their creature comforts and so on. The question is, why? Jung&co. theorized that it's where your energy is directed, inward or outward, some popular conceptions basically amount to do you get energy from solitude or company and such things. But what actually causes extraverted behaviors?Extraversion meaning low assertiveness in this case? To be anecdotal, my dad is an ISTP 8w9, and while not strict or active like a TJ (especially ExTJ), can get serious, aggressive, and assertive that quick. Like he gets often impatient and annoyed with my ESFP brother's silliness and nuttery. My father isn't a socialable (in a sense of a socialite), either, and would often watch television in his room just to be undisturbed; and he is only talkative with friends or family only and not so much with strangers.
I think ISTJs, INTJs, and ISTPs are the introverts that are most likely to be Eights, and that's because of Te's major correlation and Se's slight correlation (Ti slightly amplifies the correlation in ISTPs).
I understand that the extravert is a person that is stimulated by external stimuli
and have a large breadth of judgement/perception relative to the introvert. I can tell in comparison with my extravert brother and introvert me. What I am trying to understand, though, is why 8 incompatible with introverts (or anyone that scores low extraversion, and likewise with five and extraverts) when its descriptions doesn't really contradict anything introverted (especially among certain I types)? An Eight doesn't have to be super talkative, socialable (though it helps), or intervening in anyone's lives just to be a leader (or leader-like) and to be strong (and not being seen as weak). I can get that with an introverted 8 it may not have enough energy to project on external objects (let's say people), but that doesn't invalidate the 8 fears and motivations of the person. Just that the introverted person is more subdued.
ExxP/ExxJ has more to do with Conscientiousness, ie. orderliness, a sense of personal industriousness and ability "to force yourself to do what you want to do", not Openness. Openness/Intellect indicates things like a bohemian/artistic/unusual mindset and intellectual engagement. The bohemian half is driven by a thing called latent inhibition - basically a measure of how tenuous an association can get before our subconscious dismisses it as fanciful nonsense rather than a real connection. A high degree of latent inhibition and thus low Openness means the brain is very strict about those associations which can stunt at least spontaneous imaginativeness to a degree, while very, very low levels play a part in certain kinds of mental illness.I don't think extraverts are necessarily more shallow than introverts. Rather, focusing on one thing makes extraverts lose opportunities/more time on another things. This is consistent with your "high reward-sensitive" explaination that is true (or at least common) with extraverts. "High openness" seems to be more toward ExxPs than ExxJs. ExxJs, while engaging, seem to be stubborn in the sense of collective (everyone's welfare/competency), and anything imaginative is for the collective only. Versus ExxPs doing something for their subjective reason, without accounting the collective. It's no wonder there are more ExxP entertainers, risk-takers, and explorers than ExxJs ones (which is not to say that there can't be any of those for ExxJs--just that they account the collective basis on what they do). In others words, ExxPs are more free-minded than ExxJs because they take in raw data on their own subjective basis and not being restricted by everyone else.