LOL^
@ BC: I see why this is an open and shut case for you. Yes, according to your post, I would be an E. The reason I jumped to people is because I focus on people...most of the time. My other side is constant gathering of information, learning new things, hoarding knowledge...I guess you consider that interaction with the world as well or? Coz that's what I do all day when home alone. And then after, mulling it over as to how I can apply it elsewhere as well, or how it can help me improve myself as a person.
But the fact that my friends, not to mention my family (and don't even get me started about big parties with a ton of people I don't know) drain me like mad, make me seriously doubt my E. I've always been that way too. It's pretty much dependent on what the ambiance is that the people together create and how openminded they are. If I can sync up with them, I can ride that wave for hours, and recharge that way. If not, I soo need to get home to recharge as it drains the lifeforce right out of me.
Also, I agree with Jag. My first reaction to your statement about leading with either one or the other was: prove it!
Seriously, I just switch depending on my mood and my current project. If I'm scavenging for new info, I'll lead with Ne..see if anything fun comes along that I can play with. If I'm focussed on improving something within me, or understanding another person, I'll use Ne to feed Fi to complete the puzzle.