Some good answers people, thanks for your input.
Though some have bristled at the question because they are interpreting it moralistically. I would ask that you suspend such an interpretation (if you can). Proceed on the basis that lying is a "good" or at least necessary part of normal, conflict-free social interaction. This is the premise of the film, in which the guy who stumbles upon the ability to lie, uses it (primarily) to comfort others (he invents God, religion, the afterlife, for example.)
Precisely. One cannot consider both the truth/untruth of a matter and its (social) importance, simultaneously. One cannot focus on the object and the subject at the same time. This is where differentiation begins - where is our habitual focus, what is our preferred function? Ti can weigh the social importance in objective terms - it can understand social mores as a system - but its focus is Truth, always Truth. So to respond in a Fe-sensitive way is a very real violation of that (even if one knows, objectively, it's the "right" thing to do). I think this is why social interaction can be so exhausting and dispiriting for most INTPs (unless it's with other INTs). We understand what is required, but to indulge it we must constantly oppose our natural instinct, our preferred way of being. It's not just a question of developing Fe as we mature - which is the standard interpretation - it's a question of sacrificing that which is core to identity. That creates a real tension and is perhaps the reason so many of us isolate ourselves, or develop social anxiety, obsessive-compulsive behaviours, depression or other real psychological dis-ease. (By which I mean something detrimental to health, happiness, and growth).Feeling is important/unimportant. Thinking is truth/not-truth.
Fe-loving society likes to diagnose the Ti-dom as "autistic" to one degree or other, thus designating our natural talents a "disorder". But what if Ti-dominance were the standard? Maybe we'd diagnose Fe-doms as sociopaths, or pathological liars, or hysterics or some as yet unthought of "disorder". (The word dis-order is interesting in itself: that it might be pathological to order your world and priorities differently to the norm.)
Think about it. We have lots of derogatory labels for people who are Fe-deficient, how many for people who are Ti-deficient? About the best we have come up with is "illogical"/"irrational", but where are the equivalent "disorders" in DSM IV?
I am proposing that it might be this Extroverted Feeling assessment (that Ti is inferior, because Fe-dom Ti is indeed, inferior) that actually creates real social and mental health problems for Ti doms - that these are nurture induced and not innate. And that the whole edifice is built on a foundation of valuing comforting falsities over truth.
This isn't about making a moral judgement. It's about opposing instincts (or default modes of behaviour). Ti (comfort-zone) says "do this". Fe (the enemy) says "do the opposite". Social interactions will, in general, punish Ti-doms for behaving naturally. They force us to lie, to others, and more importantly, to ourselves. How could this yield anything other than anxiety in social situations and/or a loss of self-intimacy? We can either be comfortable with ourselves and social outcasts, or socially acceptable and internally conflicted.To even conclude that you shouldn't do something Thinking labels false (for example), you are using an F function. Feeling to say it's unimportant, Thinking to say it's false.
That is what I'm talking about. Functions don't lie, people do.If you want to talk about T-types and F-types, that's a whole different discussion.
(I'm also aware that I am doing exactly the same thing that I accuse society of, in reverse, before anyone points out the obvious).