Success in social interaction is not about holding more things in your head but often about holding less things in your head.
In the sense that you'll want to be able to model people and their reactions automatically and without needing to spend effort on it or it hogging up all your working memory, true. But if you're not good at modeling people yet, it may be better to practice it consciously until it becomes automatic.
It's better to do exercises that raise physical presence as the one's suggested in "The Charisma Myth".
These are not mutually exclusive.
But if you're not good at modeling people yet, it may be better to practice it consciously until it becomes automatic.
Normal people don't model each other through putting each other in distinct mental categories (personality types) but via mirror neurons.
Being judgemental of other people doesn't get better by doing it automatically. I don't get anything when I have an automatic thought that tells me "the person I'm interacting with is a ISTP"
In social interaction "Get out of your head" is good advice for the average nerd. Judging another person as a ISTP rather keeps them in their head.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.