@skylights If I have Fe in tertiary that would make me an ExTP... Which sounds fine with me. I'm really extraverted but I need a lot of time on my own to recharge. @AmalieMuller skylights is actually right. You can't switch functions on and off, because they don't work alone but instead form a pattern. For example Se works with Ni, and Ne with Si. Also this is the very right place for having this discussion because I'm no beginners I understand very well the MBTI system. You have 4 kinds of functions: P(i) (Si, Ni)/ P(e) (Se,Ne)/ J(i) (Ti, Fi)/ J(e) (Te, Fe). We call J types the 'judging' types because they have a J(e) function in their dominant stack, so as their dominant or auxiliary function. Following the logic we call P types Perceiving because they have a P(e) function in their dominant stack.
I'll repeat myself know sensors can be as smart as intuitive, but it's not the same type of intelligence. When I think of Ne I see quick comprehension of broad knowledge, you link everything together.
@fia Sizing people up is a ENFP/ENTP/ESTP thing first I believe. They are the most observant types. How would you describe the INFJ way of 'sizing up' ?