If you can think of existence as a kind of simulation game made up of (for lack of better words) "consciousness"; there are rules, there are boundaries, there are previous players, and newbs, etc. I like to even go further and see it as a SIMs-like game set in a casino-like/arcade environment full of games any individual can play if they can afford to. And all of the conscious creatures are in this environment playing various games, reaping various rewards, winning various contests, and counting various losses. Imagine type as a kind of program in a persons consciousness, and the INxJ pattern is the most likely to be able to put the various impressions of the casino together and clearly see that it is in fact a game. And this game is also kind of rigged in some ways. They just observe this stuff. ENxJs can see this and talk this way too, but they try to use this perception to kind of "manipulate" or "hack" the game. I am also of the belief that the INFJ type isn't all that much "rarer" than the INTJ type, but if they are, it's because the Te function allows one to at least show some competence in following the "rules of the game", whereas an Ni-dom with Fe auxiliary would be at an evolutionary disadvantage, since they must choose what they feel or find some way to "enjoy" this reality as a game, knowing good and well its fake, tremendously rigged, and unfair. INFJ is kind of like the odd-one-out, the "sprite" that accidentally "fell through the cracks" so to speak...