I've often wondered about this:
What might an INFJ be like if they spent the majority life isolated from the majority of the population? As in, they lived life on their own and had to do what they could to survive. I can imagine they might like to help and watch people from afar, and might WANT to interact, but they might not quite have the social prowess to make full use of their Extraverted Feeling.
Like...how might an INFJ who's lived an isolated existence (around only one significant caregiver who was able to teach them to speak and how to take care of themselves) behave if they're suddenly introduced to civilization?
Again, I'm not talking about an entirely feral person; they can walk and talk, and they might know a few things from what they remember in their childhood when they were still in civilization (they were cast out into the wild at a very young age). What might they behave like? What would be their primary struggles? How might their demeanor differ from other unsocialized MBTI-types?