Ah...I think acting irrationally upon anger or hurt isn't a very logical thing to do. You should take this into consideration before you assume that you have be a T to behave with cruelty.
Although I will admit that evil behavior is probably more associated with the two NFs that have tertiary T - INFJs and their sinister reputation, and ENFPs rage i.e. let me bulldoze you with my Te.
Of course there is a scenario that the person will hurt someone because they hurt them first. (what is typical for NFs)
out of curiosity, so what NF`s are mass murderer`s? or killers?
I'm curious if self is viewed in this same manner, or if the feelings and life story of self are seen as significant. I would think the most objective position is to see Self as equivalent to Other. In the same way that feeling a connection to a friend creates a subjective framework that can defy reason in favor of protecting that connection, the same could be said of self. It can be demonstrated that one human being is equivalent to another. To prefer Self to Other only on the basis that Self is the vantage point and consciousness from which an individual views the world is the core of subjectivity, since that is the core of personal intention. To be free of personal intention might not result in empathy or a connection to others, but it must view equivalent beings without preference for self. What do you think?...But to hurt someone deliberatly with an element of suprise and without remorse you will need alot of thinking. Since thinking allows you to see a person as a object that needs to me removed (or whatever).
By this I mean that you don't pay any attentiion at to their feelings and you don't care about their llife story at all. Plus you don't see how much damage you can do to people that love this person by harming him/her. Actually you see but you don't care since he/she is standing in your way.
Is it possible for you to turn off or ignore your logical analysis sometimes? If it is, then it's possible for NFs to turn off or ignore their empathy when it suits them.
'Evil' behavior, or antisocial behavior in general, is almost always caused (or exacerbated) by truama, and as so, it is the result of a distortion of cognitive functions. So there is no way to accurately specify the cognitive preferences of an indiviual effected by it.
For instance, PTSD is just such a distortion. It has specific features, and may vary slightly based on I/E, but not much. This means that the effects of truama are independent of cognitive function. Usually the person goes into a fight/flight mode of sorts, which represents a more infantile way of dealing with the world.
So can NF's be Evil or antisocial? Of course. They respond badly to truama just like to everyone else, maybe moreso, since we seem to be sponges for such shit. And given our abilities to see through people to their true motivations, we may have an easier time manipulating others to our aims.
I don't think this is true. Different temperaments react completely different from others to stress/trauma. We all have our own ways of dealing with stress and anxiety. People who are ESTP's for example most likely cope with anxiety in extremely similar ways as each other, but extremely different ways than people who are INFJ's. For example, an INFJ who had a terrible childhood will at the worst grow up to be very avoidant, depressed, and self destructive. They will be an extreme form of INFJ. An ESTP stemming from the exact same childhood will at the worst grow up to be narcissistic, antisocial, and sadistic. They will be an extreme form of ESTP.
If what your saying is true everybody who had any trauma as a child would become a sociopath. There's a reason there are a number of personality disorders.
So in my opinion NF's can be evil, but in a self destructive manner. There are many forms of evil.
For example, an INFJ who had a terrible childhood will at the worst grow up to be very avoidant, depressed, and self destructive. They will be an extreme form of INFJ.
The problem with what you describe as logical cruelty is typically passive-aggression in the guise of reason, and yes, that is a rather unbreakable barrier for the person who uses it and for anyone with whom they interact. Giving completely over to emotion without referencing reason or consequences is also destructive. The inability to integrate the hardware in the brain that can be measured to produce emotional responses in all humans by suppressing those emotions and expressing them with a false detachment is also destructive, but because it has its own method of justifying itself, can perhaps be moreso. My impression is that the suppressed destructive emotion has more capacity to be misdirected than the childish, unfiltered outburst. For example, if someone has an oppressive, dysfunctional mother, the unfiltered emotion will probably react directly to her without regard to appearances or consequences. The suppressed response will direct the rage elsewhere towards a future girlfriend or wife. It is important to know what is felt and find a way to both filter and express it. I suppose it is a lifetime struggle to achieve in a healthy manner.Isn't there a saying the people you know the most are the cruelest of all.
Whats worse logical cruelty or emotional cruelty.
Darkest of hearts are like shrapnel exploding from within, once combusted who understands the aftermath of a melt down that is least expected.