Ti-user seeking functions

I created a thread a month ago, seeking some answers about what type I would be, but it seems like I only presented thoughts that supported what I already knew; that I use introverted thinking. A lot. I'm also sure that I'm an introvert, so this leaves four possible types. INTP, ISTP, INFJ and ISFJ. I'll keep away from the 20 questions this time. I might just focus too much on giving the right answers instead of giving an idea of how I think and act, which is the actual purpose.

Well, those four types are very different, I believe. INTP seems to be described as almost robotic (or computer-like), an ISTP would be a trouble-shooter and trouble-maker, an INFJ is a idealistic and quiet leadertype and an ISFJ would be a mother-like-type, focusing on day-to-day harmony. At the same time, I've often seen famous historical persons being typed as INTP by some sources, and then INFJ by some other sources. The thinking of those types doesn't seem that similar, which puzzles me a bit. As if any INTP that acts nicely is a INFJ, or any INFJ that acts unfriendly is a INTP. Hm. This is my Ti rambling again, isn't it? Or did some Ne spring up?

Anyway, I guess my interactions with the world might help establish what extraverted function I use. Well.

When discussing with people, at least on text by e-mail, people often interpret my arguments as being very aggressive, even though I'm not angry at all. I've also been told that, when discussing IRL I either seem gentle as a lamb or angry as a bear. 50/50. The guy who said it might have been joking, but I'm never really sure with him.

Once, a girl who identified herself as an INFP fled from a discussion as I continued to demand a good reason for her opinion instead of just listening to the fearful voice in her head. I show too little patience for those kind of things, and that doesn't really make much sense. I could be more understanding.

It was a discussion about nuclear power. Now, had she given me a reason like, that she was too risk-averse to see it as a solution or that there were some practical reasons against it, I wouldn't have minded it be being used as a reason. It might be a good reason, I'm not sure. Just switching off your mind as soon as that word is mentioned didn't seem reasonable, though. It might be with other things, in other situations, where some principle is undermined.

I might do that from time to time, turn off my mind, if I know people can't be reasoned with, but I might just as likely instead say what principles are being undermined. I guess she might have thought the same thing. She seems to have some self-confidence issues, just as I have from time to time. Excusing my behaviour didn't really make a difference to her, it seemed. My thick skin and her thin skin, well, makes it difficult to have any discussion with place for both of us, if either of us have a strong opinion, I think. Perhaps it's just me.

I don't think that the rules of our society should be determined by the morals of individuals, but by how we envision our society as a whole and by what would be the reasonable ways to reach these goals. It might be what makes me react so harshly from time to time, but I'm not sure.

... anyway. I was at a party Saturday, with a group of about 15 guys who I meet up with about once every two-three months, and their partners. At one point, one of them went to me and said that they liked that I never had said a bad word about any of them. I don't think this is completely correct, but I don't think it's really untrue either. I don't really care to judge people, but my friends often seek my council or asks me to listen. As a child and as a teenager I was very good at keeping secrets. I think my friends consider me very trustworthy.

That being said, all in all, I think I'm an INTP. I'm just searching for other functions than Ti and I'm not very good at spotting functions or understanding them. I have read a lot about them, but especially the intuitive functions seem very intangible. Extraverted intuition don't even seem that extraverted. Could any of you spot any other function than Ti (and inferior Fe, that's just the other side of the same coin, isn't it)?