Food for Thought:

INTp Thinking descriptions: Relatively Relevant

Ti as a demonstrative (8th) function (ILI and SLI)

The individual often criticizes others' views from a logical standpoint, picking apart statements and postulates and showing that they are logically flawed. However, he does not choose to do this excessively and does not expect that reality can be accurately expressed in a neat logical systematic anyway.

Te as a creative (2nd) function (ILI and SLI)

It is manifested as a preference for factual accuracy over ideological consistency, and for objective, "harsh" communication over careful words that avoid a negative atmosphere. A view of the external environment being efficient, reasonable, and making sense is essential to their well-being and sense of inner peace, but they do not feel a pressing need for being proactive or productive themselves in that area.

LII Thinking descriptions: Somewhat less but still relevant

Te as an ignoring (7th) function (LII and LSI)

The individual is adept at finding external sources of factual information and confident in his ability to evaluate their value, but regards collecting data as secondary to making them fit into a consistent logical system. To him, listing facts without analyzing their relationships is a trivial and boring exercise. He values efficiency and productivity but is skeptical that they will be achieved if one's actions and process do not follow a clear procedure.

Ti as a base (1st) function (LII and LSI)

The individual views reality through the lens of logic, immediately recognizing the correctness and appropriateness of things and their proper place in reality and in his system of views and behavior. He freely makes logical assertions, often exaggerated, about new information and experience. He holds highest those rules to which exceptions do not exist, and is a habitual critic of people or things that don't follow a set of rules, whether they are those accepted by the community, or his own, or even the other person's. Although he is able to adopt others' rules, his own are always the last word, and these are subject to continual refinement.

Often seen as "demanding", due to high standards.

Lets have a look at the old Fe/Fi

INTp descriptions - Quite relevant

Fe as a vulnerable (4th) function (ILI and SLI)

The individual tries hard to never let himself "come apart at the seams" emotionally or even let out strong feelings publicly, because displays of passion do not come naturally and make him feel self-consciousness and vulnerable to painful criticism. This makes the individual generally seem emotionally neutral and politely indifferent to excitement and agitation around him. The individual deeply dislikes attempts by others to get him to "cheer up" or "join the fun", especially in the context of group activities with loud emotional expression.

Fi as a mobilizing (6th) function (ILI and SLI)

The individual longs for establishing stable personal relationships with other individuals based on mutual trust and understanding where deeper and private feelings and experiences can be easily shared. However, the individual lacks the initiative to establish such relationships and usually expects others to make gestures in that area, admiring those who do so. In the context of extroverted ethics (Fe) as a vulnerable function, it should be emphasized that these types especially value emotional bonds where feelings go unsaid between partners, and are simply "understood."

INTj descriptions - Marginally relevant in Fe, not relevant in Fi:

Fe as a suggestive (5th) function (LII and LSI)

The individual often becomes engrossed in serious work, which leads him to neglect his complementary need for fun and emotional release. He also feels vulnerable expressing himself spontaneously in public, which allows bad emotions and stress to build up, leading to depression or sudden hostility. He enjoys being around people who make him feel comfortable expressing himself, and who can make every day new and exciting.

Although he may present a hard exterior in the company of strangers, he is likely to not be serious at all with people who know him better. His behavior changes radically - a calm and serious structured person will suddenly become jovial and warm

Fi as a role (3rd) function (LII and LSI)

The individual recognizes the existence and importance of personal relationships, so he is usually cautious at first about offending others if he does not know them well. To minimize this risk he adheres somewhat simplistically to the relevant social conventions (e.g. political correctness). However, if taken too far this produces stress, as it inhibits his natural introverted logic (Ti) inclination to voice exactly what his thoughts are on a given issue or situation, with the expectation that others will appreciate his straightforwardness, rather than accusing him of being insensitive. This caution gradually disappears as he gets to know people better.

He prefers to develop relationships indirectly with others based on open conversation and common activities, and only reveals his innermost personal feelings to those he has known for a long time. He may become confused and suspicious if they are directly solicited by others.