I read your post. Don't worry about coming across as too shrill. But I must say that, we seem to have reached an impasse, where the differences in opinion have grown rather large. Not that I am bothered by it - it gives me more things to think about and more information to absorb. But it seems to me that here might be a good point to pause the debate for a while (at least on my part) because I don't feel I can be as fervent as you are when it comes to discussing MBTI and Harry Potter! :)
I think I will rethink my position on Ni and Si, both from the Hermione-perspective (Not that I'm convinced about her, mind you.) and a personal one. Some of the things you say about Ni I can pretty much relate to on a personal level. (Such as the emotional, mental dissection, and the "Duh!...". I've been trying to identify my dominant function for a while now. I think I am an intuitive, but I don't think I am Fi-dominant.) So if Ni is really similar to that which you're saying in your post ;) the actual challenge might be in exonerating myself from the admittedly flowery impressions of Ni that I've read. (not that non-flowery ones really exist, as I'm sure you know.) On the other hand, your posts have been rather vague in defining the interplay between Ni and Ti, and how Si stands relative to these functions, and I'm not sure if I agree with some of your definitions. I might be able to talk about them in greater depth, as well as the rest of your post, when I find the time tomorrow, but no promises.
No worries. It's all discussion and fun. Though I must say that I now feel overloaded with information. :)