(playing devil's advocate is a quality of NeTi)

Ne users tend to never be completely sure about many things. honestly, reading your post, I completely see myself in you. I really, really began to obsess over myers briggs when I was finding my type. I was at the point where I could take a test and get any type I wanted based on what I was feeling because I understood all the theory behind the questions, so I needed to reason myself out in my own head in order to really know. And, let me tell you, reasoning out my entire personality is not easy. I first typed as ENTJ, but I really began to not think that was right because of my lack of conviction for my thoughts. I can see easily where others are coming from because I accept some honestly really weird possibilities as long as they can be backed up with proof. I considered that I might be a feeling type, but I have the track record of someone who is a thinker in that I actively search for new, weird music, and then I catalog it, not really paying attention to its intended emotional presentation. If you can see all the ways another person could be right but can also pick out exactly where they could be wrong, I would say that's NeTi.

For example, an INFJ friend of mine will often make assertions, and I'll ask him what made him come to that conclusion, or for some proof. he'll have a very hard time explaining his ideas and reasoning in a way that can be easily understood. I'll usually have to break down his responses into what each of those statements actually means before I can finally get into where he's coming from, because he's not used to consciously tracking every step of his information-gathering process. I'll also tend to piss him off with how much I demand proof for anything that doesn't sound right, but that's another story. I've have spent many a time trying to digest what that guy means, in countless situations.

I think these anecdotes will be helpful. I'd like to hear what you think after reading this.