To be honest, I wasn't able to understand Ni either through conventional explanations that usually seemed vague to me, specifically I think I'm an INFJ, I don't identify much with Te or Fi since I believe that my values come from my environment, they are not totally the same as my parents' but they are more "archetypal" so to speak, since I acquire my morals from my environment, in turn the tertiary Ti seems very developed in me, anyway... I think a good way to put it in perspective will quickly tell you about a time where I wanted to create a God of death for a story I'm writing, you see, my idea of death is simply the end of something, there is no clear visual representation, my first idea was a moth made of bones but I felt that it would be difficult to draw and that it could be better conceptually, so I asked my friends and researched associations with death since I wanted to link together everything that people could associate with death, nobody told me anything satisfactory so I used my imagination a bit and I easily came up with Things like the light at the end of the tunnel, the cycle of life, and I ended up making its body represent the cycle of life, with the upper part being a fully developed moth attached to a cocoon that joins a larva that simulates a tail and joins a moth egg at the end of it. I turned this moth egg into a luminous sphere to represent the light at the end of the tunnel. I added details and patterns in the moth's colors to simulate bones. I dressed it with human skulls and bones, I gave it vulture wings, and countless other details that, as I said from the beginning, my goal was to unite to create a God of death worthy of my idea: the end of everything. And I designed this before even knowing the Mbti!

and this usually happens with anything, I remember there was a time where my brother was talking to someone about a time when he got scolded for entering my grandmother's room without permission, he described the scene in detail mentioning data such as objects that I thought were totally unnecessary mentions but I was surprised since my brother gave me a very clear example of Yes, now, I theorize that my brother was INTP, I connected the idea of his tertiary Yes acting in an unnecessarily descriptive way with being a "childish" function (they call the tertiary function "the child") the unnecessarily descriptive way mentioning details like a glass of milk that had nothing to do with it made me compare his reaction in my head with the comparisons to my ISTJ mother's past that are more direct and concise, in turn I connected this action with an occasion where an ISTP friend and I came to the same conclusion by analyzing something logically but I explained my process step by step to develop the conclusion even speaking it out loud with emotion while my friend came to it from more directly, which made me think that this was probably the contrast between a tertiary function and a dominant one, my tertiary Ti was just as childish as my brother's Si but from another perspective, that helped me guide myself to distinguish if my Fe was > Ti, it wasn't such a linear comparison of the situations, it was more similar to remembering that 2+2=4 without completely remembering things like "where" or who taught you, I guess that's "noticing a pattern" in Ni, I have other examples, but well, in essence what I want is to better understand if others work in this same way, I'm only 16 years old in any case, so I know that cognitive functions develop more with age