I think most of my confusion from S over N stems from the fact that while I love to research things and make patterns and connections and symbolism, I also can derive great energy from certain things in the "real world". I can be very much in tune with it, though it may be filtered through N. I'm rarely "off in dream land", but I'm processing through whatever my dominant function/dichotomy/whathaveyou is. Does that make sense?
Like, my dad being a retired cop and my mom being a retired 911 operator, they had me take some women's self defense classes and have told me all the time it is MUCH better to avoid a situation you need self-defense than to put yourself into one. If I'm with my mom in a grocery store, sometimes I can totally zone out and just start thinking about things, but if I leave to go to the bathroom or get something from a different aisle, it's like I immediately snap into Real World Mode. Okay, that guy over there, green shirt, jeans. Does he notice me? What's his general body build? File that information away in case you need it in the future. There's lots of people over here but in this section I'm rapidly approaching there's just one guy, doesn't look the guy to be trusted, hurry in and speed your way out.
I'm also keen on sensory details, like noticing the colors in someone's eyes, the pores in someone's skin, making out distinct beats and instruments and emphasis in music, that kind of thing... but if we're going by functions, INFJs use inf-Se. And I'm stressed out a lot of the time, which would make me "in the grip" of my inferior function, which would make sense on the ISFP confusion.
I may try to skim that thread, but I don't know if I'm up for 600 posts right now. XD