I couldn't think of a better word for what I am trying to describe, so am using a familiar one to get the conversation rolling on this.
The INTJ "doorslam" isn't a doorslam like the INFJ doorslam, because the INTJ will still interact with you, but there are some similar elements I think.
Let me describe what I mean. Once an INTJ has figured out "what you are for" you get categorized into that function and once you are slotted in that spot, it can be difficult to get yourself reassigned from that role.
Roles can be anything from what the person does best (clear speaker, intuitive coder, interface-creator, customer-satisfyer, gourmet cook) to relationship-based categories (friend, co-worker, love interest) whatever.
I think it's part of the reason that NFP's keep dancing around NTJ's throwing Ne everywhere - it prevents (especially) the INTJ from assigning them a role, because the INTJ takes in this new data and delays settling the NFP into a functional capacity.
Personally, I resist being categorized, and looking back I know in the past I have kept my INTJ coworkers "on their toes" by revealing skills at key moments to keep them guessing about me. I don't want them to ... decide. It's like I can feel them trying to.
Not that an INTJ won't revisit their system, but they will resist seeing you in a new light once they've decided on what you do. Sometimes, they won't go back either, although that's only happened to me personally one time and more in the context of interpersonal dynamic. Therein is the "doorslam". This is what this person IS. File to be appended ... maybe never?
Thoughts? In no way is this post a finished product, just some ideas that I'd like to refine with input.
And anyone, please suggest a better word for the thread title than the "doorslam"?
EDIT: Pigeonholing has been suggested, so pigeonholing it shall be!