INTJ STRENGTHS AND WEAKNESSES
INTJ STRENGTHS
Quick, Imaginative and Strategic Mind - INTJs pride themselves on their minds, taking every opportunity to improve their knowledge, and this shows in the strength and flexibility of their strategic thinking. Insatiably curious and always up for an intellectual challenge, INTJs can see things from many perspectives. INTJs use their creativity and imagination not so much for artistry, but for planning contingencies and courses of action for all possible scenarios.
Siha: Solas visits the Fade to talk to spirits and learn from them, his best friend was Wisdom, he acknowledges how situations can be seen from different angles (see the battle of Ostagar etc.), he is creative and imaginative and he does use it for both, actually, painting and planing courses of action. He even thinks about proving his devotion to Lavellan by being honest with her, takes her to a pretty place for that purpose. Backing out of it does not change the planning itself.
High Self-Confidence - INTJs trust their rationalism above all else, so when they come to a conclusion, they have no reason to doubt their findings. This creates an honest, direct style of communication that isn't held back by perceived social roles or expectations. When INTJs are right, they're right, and no amount of politicking or hand-holding is going to change that fact - whether it's correcting a person, a process, or themselves, they'd have it no other way.
Siha: Solas strongly believes his judgement and rationalism. He thinks he has thought everything through and does not doubt in his assessments (regarding Wardens etc.). He does speak his mind openly, arguing if necessary. He does not hide his idea about blood magic etc. What he believes to be right and true he will epress openly, even if risking a debate or bad feelings.
Independent and Decisive - This creativity, logic and confidence come together to form individuals who stand on their own and take responsibility for their own actions. Authority figures do not impress INTJs, nor do social conventions or tradition, and no matter how popular something is, if they have a better idea, INTJs will stand against anyone they have to in a bid to have it changed. Either an idea is the most rational or it's wrong, and INTJs will apply this to their arguments as well as their own behavior, staying calm and detached from these sometimes emotionally charged conflicts. INTJs will only be swayed by those who follow suit.
Siha: He takes responsibility (sees it as having been his mistake to lock the gods away, having given away his orb etc.) and he is confident that his plan is right (hence breaking up with Lavellan even). He is not impressed by authority figures (inquisitor rivalry, Cassandra, Wardens etc.). He does not care about "social conventions or tradition" is he thinks they are wrong (see vallaslin etc.). He usually stays calm and detached. The one time he does snap he catches himself quickly and calms down instantly. He is easily swayed by a Lavellan who follows suit.
Hard-working and determined - If something piques their interest, INTJs can be astonishingly dedicated to their work, putting in long hours and intense effort to see an idea through. INTJs are incredibly efficient, and if tasks meet the criteria of furthering a goal, they will find a way to consolidate and accomplish those tasks. However, this drive for efficiency can also lead to a sort of elaborate laziness, wherein INTJs find ways to bypass seeming redundancies which don't seem to require a great deal of thought - this can be risky, as sometimes double-checking one's work is the standard for a reason.
Siha: Solas is pretty dedicated to his work, both in magic and at the walls. It must take long hours for him to draw, also he is the only of the crew who will actively research (e.g., the shards and in a few war table missions). His actions always meet the goal, he does find Skyhold, does find the artifacts an the related war table mission etc. Laziness might even have been the reason for him giving the orb to Corypheus -- let the guy do the tedious small work and only grab the orb from him once powered up.
Open-minded - All this rationalism leads to a very intellectually receptive personality type, as INTJs stay open to new ideas, supported by logic, even if (and sometimes especially if) they prove INTJs' previous conceptions wrong. When presented with unfamiliar territory, such as alternate lifestyles, INTJs tend to apply their receptiveness and independence, and aversion to rules and traditions, to these new ideas as well, resulting in fairly liberal social senses.
Siha: This one has been brought up by others, that he will actually change his mind if convinced by good arguments. He is open at least to spirits and blood magic, trying to understand their motivations instead of deeming them evil/wrong from the start. Definitely he will change his mid about humans or Dalish if the inquisitor impresses him. He does not show as much open-mindedness as I would like him too though.
Jacks-of-all-Trades - INTJs' open-mindedness, determination, independence, confidence and strategic abilities create individuals who are capable of doing anything they set their minds to. Excelling at analyzing anything life throws their way, INTJs are able to reverse-engineer the underlying methodology of most any system and apply the concepts that are exposed wherever needed. INTJs tend to have their pick of professions, from IT architects to political masterminds.
Siha: I think Solas could do anything he sets his mind to. He could reverse-engineer at least the meaning of the shards. He can apply what he has learned to the world around him (e.g., understand the meaning of the magical artifacts).
INTJ WEAKNESSES
Arrogant - INTJs are perfectly capable of carrying their confidence too far, falsely believing that they've resolved all the pertinent issues of a matter and closing themselves off to the opinions of those they believe to be intellectually inferior. Combined with their irreverence for social conventions, INTJs can be brutally insensitive in making their opinions of others all too clear.
Siha: I often felt Solas was pretty arrogant.
Judgmental - INTJs tend to have complete confidence in their thought process, because rational arguments are almost by definition correct - at least in theory. In practice, emotional considerations and history are hugely influential, and a weak point for INTJs is that they brand these factors and those who embrace them as illogical, dismissing them and considering their proponents to be stuck in some baser mode of thought, making it all but impossible to be heard.
Siha: Solas believes his assessment (Dorian, Bull, Wardens etc.) is right. He hardly considers the everyday circumstances of the Qun or Tevinter, for instance. He tends to dismiss what he considers illogical (e.g., drinking from the well, keeping the Wardens, allying with the Templars etc.). He will tolerate those decisions but never actually accept them.
Overly analytical - A recurring theme with INTJs is their analytical prowess, but this strength can fall painfully short where logic doesn't rule - such as with human relationships. When their critical minds and sometimes neurotic level of perfectionism (often the case with Turbulent INTJs) are applied to other people, all but the steadiest of friends will likely need to make some distance, too often permanently.
Siha: When it comes to human relationships, where he cannot apply logic, he has a problem. He initially fails to see Bull's and Dorian's individual values because only judging them as representatives of the Qun and Tevinter respectively. Hence it is hard for him to get along with anybody but a considerate and thoughtful Lavellan type.
Loathe highly structured environments - Blindly following precedents and rules without understanding them is distasteful to INTJs, and they disdain even more authority figures who blindly uphold those laws and rules without understanding their intent. Anyone who prefers the status quo for its own sake, or who values stability and safety over self-determination, is likely to clash with INTJ personality types. Whether it's the law of the land or simple social convention, this aversion applies equally, often making life more difficult than it needs to be.
Siha: Solas refuses all highly structured environments (the Qun, Templar order, Wardens etc.) because they limit free and independent thought. He hates when people follow blindly, e.g., the Wardens building their demon army. He dislikes Celene's leadership because it means keeping the (unsatisfactory) status quo. He believes in self-determination.
Clueless in romance - This antipathy to rules and tendency to over-analyze and be judgmental, even arrogant, all adds up to a personality type that is often clueless in dating. Having a new relationship last long enough for INTJs to apply the full force of their analysis on their potential partner's thought processes and behaviors can be challenging. Trying harder in the ways that INTJs know best can only make things worse, and it's unfortunately common for them to simply give up the search. Ironically, this is when they're at their best, and most likely to attract a partner.
Siha: Solas starts a romance in the discussion where he analyzes "his potential partner's thought process and behavior", concluding how she is not what he had expected and admitting that he therefore is impressed, opening the way for the second kiss. Before that he seems rather clueless, shaken by the Fade kiss and insecure how to go on with it.