It is impossible for any of us to prove anything, we might only find indications of her type. ISFP sounds very unlikely to be her type, by the way. How many ISFPs attend Harvard?
I understand that. I was simply dealing with the notion that the traits you listed had to somehow be "NF" traits. They are not categorically NF traits, I've definitely and commonly seen them in SF's among others.
Honestly, Portman comes off more as an SJ. But I will have to do the research, this is just my initial impression.
[I don't know how many ISFPs attend Harvard, but the only weight I see in that sort of argument is that ISFPs tend not to be disciplined at their studies and would seem to have trouble keeping up with such a rigorous academic itinerary....]
Because there are few female ISTJ actors, concluding a female actor is one, would need more evidence. Extraordinary claims need extraordinary proof.
I do see where you are getting at here. I do not think it's on the level of "extraordinary," but it's just one factor to consider among many.
Still, in terms of typing, I would be less concerned that she is an actor and more concerned in her style of acting:
1. What roles does she excel at? What roles has she seemed misplaced in?
2. How does she prepare for a role? How does she practice?
3. How does she interact with others when the cameras stop?
4. What are her priorities when acting? Methodology? Philosophy of acting?
All of those things, I think, would tip us more off to her type than just the fact she happens to be an actor. All the data just works together to give a clearer picture.
I suck at explaining my views, and even more so in English,
What is your native tongue, Splittet? I didn't even realize you weren't naturally trained in English... (It seemed coherent and casual enough to me.)