INTJ in his hardass modei swear, sometimes it's like he doesnt want a conversation. EX: something will remind him of something when he scanned the environment, and he'll kind of state his strong opinion on the matter, in a way that doesn't seem to invite any conversation. but then he'll share a personal story on the matter if i look kinda lost or confused at what just happened.
bad at communicating his interpretation of theory to us. it's all in his head, alright, but it has a tendency to get really abstracted when he's trying to explain it to us because it's so obvious to him.
Doesn't do polite, social etiquette things like "bless you" when someone sneezes or "how are you?" to start off a conversation.
Plays with things in his hand a lot while talking. pens. chalks. breaks chalk often.
Ironically, doesn't register someone when they come in late or leave early. he seems to be lost in theory, and rarely realizes when people move around?
Or at least I can make a lot of parallels to my INTJ acquaintance. He states things as facts because Te deems them logical, Fi he feels it is right thing, and Ni calculated it all out already. He totally blew off the ESTP one day, once again making declarative statements. He will often opt out from the group to do what he feels is right for him. He feels like separate unit from other people, very individualistic, very strong "I" focus. Sometimes acts like an outspoken leader, but at the same time I've seen him drop everything and retreat into shadows. Not too mannered for my Fe tastes. He plays with a pen or fiddles objects in hands a lot, especially when interacting with others - Ni-induced anxiety is a problem for INTJs same as us. This wanting to survey the whole I think is also a Ni thing.