"In terms of introverted dominant functions, the flip side of pair 1 (dominant introverted sensing) is pair 6, the introverted INFJ and INTJ, which share hidden introverted intuition (yellow) as a dominant function and may be the most frequently misunderstood of all the personality types: a kind of mastermind odd-man-out. These people do rely on 'inner certainties' reached through a process of inner intuition. People with this dominant preference process concepts globally and intuitively, but internally (unlike the extraverted pair 7, developing an inner certainty they may not be able to explain, so there can be an unfathomable quality that puzzles those for whom intuition is a lesser function (particularly if it is the fourth, inferior, function). Thus the preferences of pair 1 (ISTJ and ISFJ) and pair 3 (ESTP and ESFP) for facts and concrete detail can lead those types to be suspicious of the introverted intuitor's certainty and goals for the future, because that certainty is reached in a puzzling, unorthodox, intuitive way (where pair 3 have their inferior function).
The person with INFJ or INTJ preferences can become very sure of the rightness of their inner realisations: the introverted intuition gives a clear, planful certainty about the future, unclouded by detail, and being decisive Js, once decided they will stick to their plans. In John Beebe's Jungian archetypal terms, dominant introverted iNtuition is on a Hero's journey: a person with this preference is quite sure how things should be, and how to make them that way, with a sense of 'knowing' that gives priority to this journey over everything else (it is often said that that they 'know what they know'). This makes them system-builders and constructors of future reality. In a high-ability person in a position of authority, with reliable people on tap to whom detail can be delegated, this can have momentous impact -- although the degree of inner certainty bears no necessary relation to the quality of the revelation; Hannibal (of the Alps) is cast as INTJ, but so is Hannibal Lecter. The same kind of introverted intuition contrived the elephant scenario and the Clarice manipulation. The skill in both cases, positive or scary, is calculated 'knowing how to get there' -- just knowing. The burden of the introverted intuitor is making others see what one cannot easily explain in their concrete terms: the vision has to be translated into a foreign language ('Do you speak concrete?'). The introverted intuitor focuses on the plan, all the time drawing energy and ideas from elsewhere to move towards the larger goal, checking reality against the inner ideal to judge progress and make constant adjustments and improvements in order to reach the planned destination. This makes them quite happy to be flexible and to delegate.
However, the fourth function is the tricky area as usual, and in this case the devil is truly in the detail: the fourth function is inferior extraverted sensing (small green dot). Whereas in pair 3, where it is a dominant function, extraverted sensing makes detail king, showing up in good taste in the material world, enjoyment of material things, and appreciation of fine points, as a fourth, inferior function that can behave emotionally or in an unformed, childish way, in pair 6 it can cause trouble in those same areas. Thus people with these preferences may not 'get' the social rituals and material display that are enjoyed by dominant extraverted sensing types, instead having to 'work at' things in these areas to get by socially; taste and style are perhaps not noticeably developed. Where in pair 7 (ENFP and ENTP) inferior introverted sensing can lead to a childish refusal to plan financially or obey orders, inferior extraverted sensing in pair 6 (INFJ and INTJ) can manifest in a childish sense of entitlement to recognition or reward, even if their performance does not justify it. As the fourth, inferior function, if allowed to be in charge (for example, under stress), it can behave badly over anything that appears to be thwarting personal goals the person feels entitled to achieve.
The feeling function (not discussed in detail in this explanation) also comes into play. In pair 6, the INFJ has extraverted feeling as an auxiliary strength -- making this person warm, supportive and caring. In the INTJ the feeling function is introverted, and is also the third function, not an auxiliary function. So emotions are not felt as expertly; they are internal and remain unexpressed externally, so the person may seem outwardly calm or cold when actually feeling anger, or sadness, for example. By way of contrast, in this third position, in the opposite type (the ENTP), the feeling function is no more expert, but it is extraverted. Thus the opposite problem arises: the emotions may be too open and easily read by the outside world, and may be hard to control under pressure -- as may occur in an ENTP who is very tired and becomes tearful 'inappropriately' (and infuriatingly, for them, as they try to control it; this is quite different from someone who can intentionally 'turn on the waterworks' to get what they want).
In pair 6 the 'rightness' of the plan developed by the positive dominant function, introverted intuition, is fixed by the certainty of the J (the deciding, judging function), so while the introverted intuitive person sees everything in service of their larger goals, their inferior extraverted sensing can fail to see the importance to others of consistency of detail, or even the depth underpinning the detail; bowerbird-like, they may just capture conveniently blue bits and pieces to decorate their bowers. As long as the changes and additions are judged to be improvements and the structure of the bower remains undisturbed, it truly does not matter where the supporting detail comes from; once incorporated, what went before, including sources, may be forgotten. This is a long-range vision. Thus, particularly when stressed, or forced to operate out of their inferior sensing function, people with this personality configuration may constantly 'change the story' or appear erratic because they have literally not noticed discrepancy in the details, or have not attended to what others (particularly the dominant extraverted sensing people of pair 1) see as truths and responsibility, as they are so firmly fixed on serving larger plans. This fixity of plan is what enables them to persist, and get things done, but its details may remain hidden from others, or just not be explainable in concrete terms. This weeding out of the irrelevant in the absence of a deep sense of social responsibility (inferior S), may lead the INTJ to claim credit for more than they have in fact achieved (perhaps because they know what they want to achieve, and it's as good as done, or because in order to get it done thay have to makes claims). Or they may appear rude when they fail to deal with 'unimportant' matters (unimportant to them), such as returning phonecalls -- so fixed are they on the things that are relevant to the planned future. In the INFJ the interpersonal strength of the F preference moderates this effect of the inferior S, so the INFJ will put themselves out for others (but for F reasons, not S reasons)."
