A good example of the Ni/Te is S1E07 @ 13:48
Ni/Te is very good at keeping variables in their head.
Yup. They never remember them. They're always making them up as they go.
Whereas INTPs/ENTPs are usually great at visual math but if it comes to storing more than a few numbers at a time, especially moving them around, they will resort to writing it down.
True. They always forget about putting their numbers in their phone. When they need to ring the number, they usually just type them in the phone, and that is it. They don't remember every number. Probably on average about 8-12 digits for each number, and about 20-50 numbers, for their phone. They tend to be very hard on themselves about not remembering every detail. They'd consider themselves forgetful if they've ever forgotten a single thing in their entire life.
If you ever watch an INTP/ENTP give a speech for example, they will almost always go off a prepared piece of paper.
INTPs are funny at speeches. They'll have the entire speech printed out, with all the bullet points and footnotes. When you ask why, it's because they are worried that they'll forget something, or will say something wrong, even when they have memorised it perfectly. In the first couple of minutes, they'll be reading from it verbatim like an idiot. They sound so robotic, it doesn't even make sense. When they relax, and start getting comfortable, they become incredibly eloquent, and hardly glance at the notes at all. When they're really relaxed, they'll start ad-libbing, embellishing the speech by quoting the footnotes verbatim, even though they don't have any of the quotes on their sheet. They're always convinced that they did the speech badly. But people love it.
Ni often doesn't need to, they can remember what leads to what, this is what typically makes them great conductors/musicians.
One of the things that I've noticed about INTJs, and that they've pointed out to me numerous times, is Ni can retain the current worldview that they made for the task they were on. But once they have to work on a different task, they need to use a different Ni worldview, and the old one gets dumped, because they can't retain it.
It's quite funny to watch them talk. You can listen to an INTJ give a speech that sounds brilliant, for an hour. Then the next day, ask them to repeat it. They say a speech that is just as good, and sounds like it seems the same. But if you recorded both quietly, without telling anyone, and then play them back to compare them, you realise that they've just given 2 completely different speeches.
You can ask them why they didn't use a piece of paper for prompting. They'll tell you that they don't need it. But then, you have the tapes, and you know they did need it. You can point it out. But there's no point, because they'll just keep on inventing arguments on the fly to dismiss the evidence, until you give up.
They even say that they'll answer the same question "black" on one day, and "white" on the next, because to them, they are 2 different contexts, and so they are 2 different truths. They really believe that the truth changes with a different
context (their choice of word).
This makes them excellent conductors, because conducting is about leading people in a unique environment where you have to guide them with the flow that is there at that moment, and will never occur again the same way. It can't be done directly off a script, without sounding incredibly hollow. You have to improvise, which is their biggest skill (and their biggest weakness).