I'm going to go into Perception functions with some depth here, as I think it may be helpful:
Both forms of Sensation are useful for noticing details in the environment, at least I believe this to be the case. An important difference between Se and Si has to do with focus, but both SJs and SPs can handle themselves well with details of the environment.
Se has more of a direct focus on what things are in the environment. It cares about what things are independently of the subject. By itself, Se does not compare any piece of data with any other piece of data recalled in the subject. Se is the most straightforward perception function there is: within it's perspective, by itself, each thing is what it is as it is, period.
Si, on the other hand, is significantly different, because it places a greater focus on what things make the subject recall. For Si, the nature of things outside of the subject isn't really what matters, but rather, the past experiences that are recalled due to experience with things. Si cares about comparing pieces of data with each other, as opposed to Se's approach of seeing each piece of data independently.
On to the Intuition functions:
Ni is Se's partner: it looks for patterns that join together Se pieces of data. It sees long-term trends, projects into the future, and sees potential implications of decisions and events. Contrary to Si, it generally doesn't rely on past experience as much, and tends to see the future as something to be leaped into with a sense of certainty.
Ne is Si's partner: it sees potential in the environment which is cross-referenced with Si past experience. While it is future oriented (like Ni), unlike Ni, it isn't so much about long-term trends, but rather, about seeing short-term potential. It sees multiple possibilities quickly. For Ne, the future isn't a unidirectional singularity (as Ni sees it), but rather, it's something that is impossible to predict with certainty, and is best seen in terms of multiple potential scenarios, as opposed to one scenario.
I think many ISTPs might naturally dislike Ne, because to them, there's little point in playing with possibilities that feel detached from data available in the here and now. To the ISTP, it's preferable to just act on concrete data that is presently available, and see where things go from there, whereas INTPs (at least from my understanding), because of their preference for Ne over Se, might not really care much for acting on such data in the same manner that an ISTP might; instead, an INTP may prefer to toy with possibilities, thinking about things that could be done without focusing much on what current available data is. Of course, in order to work on these Ne ideas, an INTP might require Si past experience, in order to inform the INTP about which ideas have the highest correlation with what the INTP knows to have worked in the past.
The ISTP is likelier to run with available present data (Se) possibly considering future implications (Ni), while the INTP is likelier to run with short-term visualized possibilities (Ne) that might be cross-referenced with past experience (Si).
