Introverted Feeling
Introverted Intuition
Introverted Thinking
Introverted Sensing
Extraverted Feeling
Extraverted Intuition
Extraverted Thinking
Extraverted Sensing

Introverted Feeling

For Fi : "Our love broke my heart, and stopped yours."


  • Static, deals with sentimental statics of relation and the field of psychological distance.
  • Awareness of the ratio of state of energy (interpersonal), like the ratio of my emotional energy to yours but chiefly, this very ratio is influenced by the sentimental parameters of the Fi user themselves.
  • This awareness is used to fine-tune the wavelength of two different persons (w.r.t. the internal state) to bridge psychological distances or to assess the ethical relation between objects using the Subject and their values as a reference point.
  • Hyper aware of its own emotional state because it has so many other emotional states to contrast with, one by one, being static and dealing with the field of internal states.
  • Represents valuing others (selectively). Also, others valuing the Introverted Feeler is only, for the subject, an indication of their values being put into practice, being deemed useful (Inferior Te).
  • Represents a magnetic field, in which objects are accelerated (inferior dynamic Te) only if they have sufficient magnetic character (passes through the Fi filter) so in the case of dominant Fi, more focus is given on the filter for the sake of the filter itself while dominant Te wants ‘acceleration’ as soon as the filter completes its job.
  • INFP : +Fi : Relationship Ethics of Forgiveness : forgives and trusts people, giving them the benefit of doubt. Being kind to others, keeping relationships intimate, dealing chiefly with individuals and comforting the grieve-stricken. For Albert Camus (INFP), Fi supervises Ne so his notion of the absurd is a good contrast to Sartre’s (ENFP) dominant Ne which isn’t supervised by his own Fi and therefore, Sartre condemns all meaning whereas Camus accepts meaningless insofar as one gets a chance to rebel against it because the Universe is too chaotic to know for sure what the truth really is.
  • ISFP : -Fi : Relationship Ethics of Disapproval : sometimes mistyped as INTJ (and vice-versa). Can be suspicious/distrustful or hold grudges but also good at moving away from this Negativist aspect of Fi—often excelling at it, unlike the INFP. Keeps others at a distance. Punishes bad behaviour, may come off as aloof or formal (INTJ similarity). eg. Touka Kirishima (Tokyo Ghoul), 
  • At its best : Exploration of the self, stable identity, kind, constructing value systems, championing the downtrodden.
  • At its worst : Due to championing a particular value—might be deemed ‘evil’. Destructive, cold, passive-agressive, stubborn, severely neglecting factual information and logical consistency, iconoclastic—loneliness—Avoidant Personality, Borderline Personality.

Extraverted Feeling

For Fe: "I cherished, you perished. The world's been nightmarished."
  • Dynamic, deals with the Emotions of people in real time.
  • Awareness of the states of energy around the individual.
  • Emotions are different from feelings. Emotions are instinctive responses (based on certain parameters) to stimuli whereas feelings are deep convictions that are not affected suddenly, unlike emotions (which are, by definition, actually caused due to stimuli). This is why the Fi user jibes at the Fe user (displaying a spectrum of emotions according to any given moment) for a lack of authenticity since for the Fi user, the conviction remains unaffected by this stimuli, whereas for the Fe user, these emotions are used to influence and develop energy states rather than statically being assessed. 
  • Tests the energy of the state using Emotions to adjust it but not according to a single internal state (Fi, which acts one-on-one) but to use it to bring all wavelengths to a single resonant frequency (Harmony).
  • Best function for communication since it knows what the masses expect or more accurately, which thing won’t anger the majority of people.
  • Represents others valuing the Fe user, since the sense of identity is Extraverted (and based on the development of emotional states rather than the static analysis of discrete states—Fi) and, also depends on the dimensionality of Fi in the Fe user.
  • When Fe is dominant, Fi is ignored, so the internal emotional state is muzzy since it isn’t being compared with anyone else’s because they (Emotions) are influenced by and influence others’ in real time (dynamic function) :
  • Fe dominants deal with their emotions excellently but the thing is, these emotions can only give them a sense of their states with respect to each passing moment while knowing the internal state (which isn’t as unstable) doesn’t depend on such a continuous spectrum of reactions which are themselves not indicative of internal states to begin with, since those Emotions aren’t uninfluenced representations of the internal state. Fi dominants give birth to their convictions and since those aren’t dynamically influenced, it explains why they are not as emotive as Fe dominants.
  • Represents the conversion of Potential Energy to Kinetic Energy; converting the possibility (potential) an object yields to a dynamic (kinetic) state helps gauge the excitability of objects—noting the development (dynamic) rather than the structure (Fi, static).
  • ESFJ : +Fe : Ethics of Positive Emotions : Joy, excitement, expressing enthusiasm, being open and friendly with people. May come off as unsettlingly too nice. Tries to promote a warm atmosphere/caretaker role, Mrs. Hudson/Molly Weasely like persona to ensure positive atmospheres but gets uncomfortable due to negative emotions due to the incompetence in converting them into positive ones.
  • ENFJ : -Fe : Ethics of Negative Emotions : Escalates emotional conflicts (is periodically anguished), may come off as indignant or too dramatic (Hamlet, literally berates the whole play with monologues after monologues of plight and bad emotions while uttering few words to actually a real person) and use a lot of mockery and sarcasm but whole-heartedly tries to move away from bad emotional atmosphere. Associated with dramatic interpersonal story (romance, fighting, revenge, judgment, death), also with witches, prositutes, don juans (can also be ExTP), and kings/queens/rulers, especially charming/tyrannous/temperamental ones.
  • At its bestwarm, helpful, accommodating, jovial, the inspirational ‘light’, self-sacrificing, teaches people how to be a human.
  • At its worst : manipulative—riles up emotions to get what it wants, martyrdom-complex, melodramatic, overreacting, unable to sort out emotions (pressured state) and deal with it logically.

Introverted Intuition

For Ni—"My love for you shall live forever. You, however, did not."
  • Dynamic, deals with the evolution of possibilities over time. Truth-function. Mutually dependent, exhaustible Probability.
  • Represents a holistic and reflective state of mind, self-knowledge.
  • Feeling melancholic—sentimental, depressed are all forms of Ni; strong, unexplainable instincts; perceptions; not to be mistaken with Feeling functions since these instincts are not a conscious assortment of information (Judging) but rather, internal perceptions (Pi).
  • A mechanism that deals with ideas in real time, not excited over the possibilities but how each evolves over time. With time, certain possibilities are subconsciously discarded or adducted to yield new ones (insights) depending on an instinctive probabilistic mechanism.
  • Ni described by Sherlock (bad audio, copyright issues).
Transcript of video-link : “I have theorised before that if one could attenuate to every available data stream in the world simultaneously, it would be possible to anticipate and deduce almost anything.”
Consulting Detective
Quote 2 : “The world is woven from billions of lives, every strand crossing every other. What we call premonition is just movement of the web. If you could attenuate to every strand of quivering data, the future would be entirely calculable, as inevitable as mathematics.”
Consulting Detective
  • Aforementioned descriptions related to heightened form of the cocktail party effect and selective attention theories.
  • Represents Thermal Energy; how one thing heats another and affects the entire surroundings; how states evolve due to being impacted by a single energetic source (as opposed to Ne which can only see the potential of a certain object—not how that possibility evolves with time, which is why it’s faster).
  • Naturally better at metaphors than Ne, due to its dynamic nature overseeing the evolution of possibilities with time in addition to it filling the blanks (being innovative) whereas Ne, being static and dealing with discrete possibilities, joins the dots (and is creative).
  • INFJ : +Ni : Intuition of the Future : Thinking about the future, dreaming and hoping—hoping for a good outcome. Holds the vision and brings the future into the present (Hegel and his Dialectical Idealism). Here’s a short contrast between the teleologies of Hegel and Marx and consequently, the different forms of Ni.
  • INTJ : -Ni : Intuition of the Past : Worries about the past (temporal perception of possibilities not in front of the person; possibilities that do not lead from the now, but those which led to the now), uses past analysis (looks for and extrapolates recurring patterns) to predict where the current state is heading and trying to prevent past errors from happening again (Karl Marx and his Dialectical Materialism).
  • At its bestBrilliant insights, comes up with ideas that completely changes the way we look at things (eg. Jung), self-knowledge, spiritually holistic calmness, peaceful contemplation.
  • At its worstParanoid, delusional, degrades itself to lunacy (Nietzsche’s insanity), never mobilising to take action, not knowing when to put the foot down, not letting oneself go.

Extraverted Intuition

For Ne : "This Hunger for Hunger needs but a single bite of Si to cure its affliction."
  • Static, deals with one possibility at a time. Tautology. Mutually independent, inexhaustible Probability. Could be correlated with a dopamine affliction, along with Se; Se countering it by taking action while Ne through metaphysical action.
  • Represents the search for new possibilities, measuring and exploring new ones discretely (being static). Excited when thinking about what to do next. Best at Trans-contextual (and fruitless) thinking.
  • When Ne is dominant, Ni is ignored and in the case of Dominant Ne, it results in the lack of interest to the internal mental state and instead focusing concentration wholly onto objects (possibilities) and unchanging scenarios (being Static) since Ni essentially sees possibilities evolving into solutions or unifying so that it seems inescapably true. But with dominant Ne, possibilities are discrete so as soon as an evolution/unification comes to mind (Ni), it is simply ignored in the favour of other discrete, possibility which only evolves into another possibilities (representing another discrete one) so decision making is suspended indefinitely:
  • Note that this is why Ne dominants have the hardest time typing themselves, wanting possibilities to yield even more possibilities—related to Schopenhauer’s notion of The Will —the solution to this endless problem might be found in (his own notions of ) ‘Aesthetic Freedom’ and ‘‘Renunciation‘ or Epicurus recommending ‘pleasure’ but not a hedonistic form (as widely misattributed) but pleasure in detachment, renunciation, the equanimity and tranquility of the mind; the virtue of Enneagram 7.
  • Represents Potential Energy; What could be.
  • Naturally better at analogies than Ni because, being static, looks for possibilities that don’t lead anywhere conclusive (since it is tautological) whereas Ni (being dynamic and teleological) looks for the evolution of possibilities so it is inherently predictive unlike Ne (actively prospective).
  • ENTP : +Ne : Intuition of Possibilities : Childlike exploration—the  destination only an excuse to set sail, looks for the new and seeks to invent, trying to be original. Being sceptic (Hume’s scepticism). Socrates as the wise man who ‘knows nothing’.
  • ENFP : -Ne : Intuition of Alternatives : Finds ways to avoid boredom (chief problem of the Delta Quadra), sees the hidden side of things (being Negativist, looks at alternatives, rather than possibilities). Sets oneself apart and good at turning the boring situation into an exciting one (Negativist going towards the positive aspect of Ne). Sartre’s Existentialism sums up this boredom and looking for alternatives and meaning in the light of no possible cause of existence; existence precedes essence. Schopenhauer’s section of the ‘Will’ concerning humanity’s relentless and inexhaustible search for pleasure.
  • At its best : Being aware of patterns and connections between objects and ideas, Lots of new ideas which could be potential game-changers, quick, energetic, optimistic, childlike-exploration.
  • At its worstNeglects taking care of oneself, uselessly exploring possibilities just for its own sake without coming to a conclusion—disliking finality, Pessimistic, talks too much, absolute scepticism.

Introverted Thinking

For Ti: "When we first met, you were pretty, and I was lonely. Now I am pretty lonely."
  • Static, deals with objects and their positional, structural properties in space. Causality. Cogito ergo ist (to think is to be).
  • Rotates the problem around its semantic axes to generate a model, represents clarity of thought, analytical state of mind, monotony.
  • Looks for the mechanical relationships between objects (objective) despite being subjective because even if the subject enters into the decision-making paradigm, it is also itself considered an object. Best function for detached, impartial analysis.
  • Represents the state of Equilibrium; indifference and calmness. Subject reacts to mechanical properties and structures so the elicited emotion is only that which affirms or negates the structure and not a sentimental reaction, that which affirms or negates energy states, towards it.
  • ISTP : +Ti : Design Logic : deals with logical systems on a local level—following the most rational ones that work the best and have the most impact (Se) at the expense of others (deemed incorrect; globality of -Ti, on the contrary, works fractally). Follows either/or linear reasoning. Painstaking and exacting but insofar as to which propositions deserve the time (locality of +Ti), with the attention to detail of the structures reinforced by its locality, designing it using the structure at hand (which is why Casual-Deterministic style is so pronounced in ENTP/ISTP, since their +Ti deals with structures at hand, and wishes for local consistency to proceed forwards).
  • INTP : -Ti : Fractal Logic : Follows fractal, polymorphic, synthetic logical abstraction which finds it easier to account logically for what is not true than what is. Structure of time; analyze events and act in accordance with the logical development of the system.  Uses and/or cases; resolving contradictions and paradoxes, finding order in chaos; multi-dimensional analysis of objects. Destroying logical structures (The Cartesians; Kant accidentally smashing all philosophy upto late 18th Century but offering no solution since it’s easier for Ti, here, to judge what’s false rather than what is true because either/or is here replaced by a less demanding and/or). Also somewhat related to fuzzy logic which deals with the degrees of truth.
Kant (INTP) says the Universe is unknowable—the question really doesn't matter since it’s in the ‘noumenal’ (completely objective, existing irrespective of human subjectivity and perception) world, something inaccessible by the ‘phenomenal’ (governed by human perception as encompassing modes of time and space) world that we live in.
Immanuel Kant
German Philosopher
  • At its bestWill to clarity, indifference, calmness, knowing what one wants, bullshit-filter.
  • At its worstSeverely incorrect, nihilistic, rigid and extreme rationalism (Parmenides and his stubbornness).
By a strictly deductive argument, Parmenides asserted that change is impossible, and that coming-into-existence or ceasing-to-exist are likewise impossible, so that everything that exists is permanent, ungenerated, indestructible and unchanging. His argument refutes all accounts of the origin of the world, and represents an early type of Monism. Parmenides therefore made the ontological argument against nothingness, essentially denying the possible existence of a void, which led Leucippus and Democritus to propose their theory of Atomism (that everything in the universe is either atoms or voids) specifically to contradict his argument.
and his extreme rationalism

Extraverted Thinking

For Te : you came, you conquered, you left.


  • Dynamic, deals with how objects/structures impact each other. Causal Causality. Cogito ergo cogito (to think is to think).
  • Looks for impacts and mechanical implications (and not the process; Ti) of the structures, hence, also called Business Logic.
  • Looks for efficiency for it evaluates logical implications dynamically, serving only those situations which impact other situations mechanically (bringing about Profit, or avoiding Loss).
  • This rational outlook negates the sentimental implications because only represents the object’s mechanical relationships with the subject.
  • Represents the use of Kinetic Energy; moves forwards and instrumentally expends energy to achieve a goal, unlike Se, which only perceives the field of Kinetic Energy (being static). 
  • When Te is dominant, Ti is ignored and in the case of Dominant Te, classification and structures are unvalued because, being dynamic, Te has no use for static properties like classifications/theory/structures since they don’t represent any favourable mechanical changes since Ti deals only with unchanging (static) mechanical attributes.
  • ENTJ : +Te : Profit of Enterprise : focuses on profitable investments, dynamically responding to updating demands, exchanging, deals with profitable demands on a local level—meticulous and bold testing, restructuring (Napoleon going around smashing the Aristocracy, Irene Adler from Sherlock, Light Yagami from Death Note taking a potato chip…and eating it)
  • ESTJ : -Te : Profit of Frugality : chiefly focuses on being economical, efficient and hard-working, frugally using resources, very scrupulous formal matters (Greg Lestrade from Sherlock, Minerva McGonagall and Hermione Granger from Sherlock Holmes).
  • At its bestDoes what should be done, Excellent entrepreneur, trusts scientific methods over deep sentimental analysis, works hard to achieve goals, structured, good management-skills, empirical, practical, lucid communicator.
  • At its worstEbenezer Scrooge, elitist, megalomaniac, multiplying data rather than synthesising it, harsh, spews ad hominem arguments.

Introverted Sensing

For Si: "You will always be in my heart, in my mind, and in your grave."
  • Dynamic perception of sensory input, how one physical state leads into another.
  • Different schools of thought regarding Si, the function most heavily misunderstood.
"If Sensation is introvert, the mind is chiefly influenced by the inner sensations. An instance of this type is the artist who approaches his work exclusively from the subjective point of view. The more our sensations are differentiated, the more clearly shall we be able to appreciate what has eternal value for humanity, Man possesses a certain inherited need of Sensation, and the more he gives his sensations free play, the better will he be able to distinguish those which respond to his inmost nature. In these cases of passive receptivity, all that happens is that the inner sensations are differentiated and clarified but not further developed. This inner mental activity usually remains hidden from the outer world, and only those impressions which touch the inmost being, can bring about a reaction. The value of this function in its developed form, may be said to consist in a sensitiveness to what has eternal significance, arising from the profound needs of human nature. When this type of mind is very pronounced, its onesidedness will become evident ; such persons are too passive, too much aloof from the world, and find a special difficulty in self-expression. In consequence they often give the impression of not having found a satisfactory way of sublimation or adaptation."
—Van Der Hoop on Si
Character & The Unconscious
  • Represents a physically relaxed state of mind, homeostasis, seeking physical comfort (creating/consuming), continuity of the movement (dynamic), convenience and satisfaction.
  • Being dynamic, looks to see how the individual senses affects the field of sensory input. We sense taste, for example, only when it is changing, otherwise our receptors adapt themselves to it and stop responding.
  • Notices physical/sensory comfort in oneself and around others, using that to fine-tune the wavelengths and generate comfort for others or detect how what one does will lead to a comfortable physical state.
  • Represents Elastic Energy (or Simple Harmonic Motion); knows how to restore a tough situation to stability.
  • Note that all dominant/demonstrative functions, 4-D in strength, operate freely and manipulate elements in time which means that ANY dominant function can predict the causal outputs of its own influence and it is distinct from Ni which dynamically manipulates the evolution of possibilities over time.
  • ISTJ : +Si : Sensation of Comfort : Focuses on how to create a comfortable environment for oneself, dedicated to maintain the same. Achieves self-sustainability and efficiently exercises the freedom to govern its own matters. Arduously hardworking and sincere. The ‘good citizen’ (Yagami Souchirou from ‘Death Note’).
  • ISFJ : -Si : Sensation of Discomfort Treats and eliminates daily discomforts and maladies. Does the daily dirty jobs which no-one else has the patience to do. Unfairly but perhaps correctly patronised as the ‘dutiful housewife‘. Utilises +Ne to avoid possible discomforts. John Watson from the Sherlock Holmes series.
  • At its bestMakes everyone feel relaxed and comfortable, looks out for people, shares its wisdom and experiences, sincere, hardworking, consistent performance.
  • At its worstToo risk-averse, closed off to new possibilities, taking the path of least resistance/maximum comfort, Pessimistic, not open to new experiences.

Extraverted Sensation

For Se : "I can neither live with you nor without you."
  • Static perception of Forces and volitional pressure of individuals. (Empirical research suggests correlation with the Jedi).
  • Awareness of the space around itself, easily detects volitional pressure (from people with different energy levels), mobilising, will, strength, essentially reactive.
  • Being static (and operating mechanically like Ne, see above), it deals with discrete (static) pressure states. It is essentially reactive because it perceives a malleable space and discrete pressure states invoke an urge to affect the physical state and make sensory impact.
  • When Se is dominant, Si is ignored and this results in a sort of recklessness for which the function is quite infamous. Since Se is static, it does not, unlike Si (which notices the flow of movement of one physical state to another; resultant characteristic cautiousness), gauge how each malleable action develops or leads to another state (quite like Ne for possibilities) since the sensory input is taken discretely so each state has usually 1 or the most obvious reaction to it because it isn’t concerned with the evolution of physical states, being static.
  • Represents Kinetic Energy; What should be done.
  • ESFP : +Se : Force of Resistance : Rebellious, focusing on the locality of force and directly resisting the stronger forces (being aware of the forces exerted locally) by increasing (+) their own force through skilful coalitions. Openly assertive. Inculcates defense, insubjugation, counter-attack but do not be mistaken, for the ESFP is truly jovial and fun-lovingly reactive (Onizuka from ‘GTO’, Joey from ‘Friends’, Ronald Weasely from ‘Harry Potter”).
  • ESTP : -Se : Force of  Subordination : Builds a hierarchy based on ‘force’. Entices initiative, offensive-attack (launches blitzkrieg and waiting for a chance, destroys enemies in one fall sweep; Napoleon), subjugation, noticing the lack (-) of ‘force’ in others and using it against them. Hence, the popular nickame, Conman (Sawyer from ‘LOST’, James Bond).
  • At its best : confident, mobilises everyone to take action, expressing the joy of the Dionysian, inspires, not one to shy away from a challenge.
  • At its worst : forceful on others, impulsively disastrous decision-making, hedonistic, obsession with reputation and power.

Read More:

2 thoughts on “A Description of the Functions”

    1. Thanks! ENTJ always wins, even in quotes—unless, of course, Batman’s competing as well. Because then, it’s always Batman. Always.

Leave a Reply