Maybe it's Fe, but I just have a tendency to, at least mentally, translate unwritten rules and vibes into written rules, principles. Or maybe it's Ni -- inductive reasoning. Like, this guy was giving my mom a ride to religious meetings out of town on a regular basis, but he didn't ever want to stop to let her use the restroom because he was impatient to get back. It wasn't a romantic situation or anything between them, but I would have a lot of trouble respecting the religion of someone who would knowingly allow another person to suffer when it was so easily in his power to alleviate it. I wouldn't hire someone like that to, say, look after small children, animals, or sick people. I don't think I'd hire him to be a prison guard.
So I could translate that into a 'rule' or principle if I wanted - like, "Don't put a person who shows a lack of compassion in small areas in a position that requires compassion, without direct supervision."
Of course, you'd want to make sure that your observations were accurate in the first place -- say he had
stopped at a gas station to let my mom use the restroom a couple of times and each time she had chit-chatted with the cashier for half an hour or had come back to his car smelling so strongly of cigarette smoke that he nearly gagged.
You'd also want to make sure that there wasn't some kind of specific situation, like, he had to get to work or he was trying to make hospital visiting hours to see his sick mother, etc.
If there weren't special circumstances, then probably the guy is kind of a dick.
But of course
use your brain. Always use your brain. It's not in there to just keep your skull from caving in, after all.