What do you think of this definition Sim posted on personalitycafe?
I find it really interesting - especially the examples. It seems to be missing the essence of some things though.
"Ni, or introverted iNtuition, is dominant for INxJ, secondary for ENxJ, tertiary for ISxP and inferior for ESxP. It is an inward sense of abstract perceptual shift. Rather than imagine different ways we could change the outside world, Ni acknowledges many different ways we could change the subjective meaning of things to ourselves by looking at them from different angles. Rather than directly confront an issue, Ni will often solve problems by simply looking at them from a different angle. Doing a bunch of community service sucks? Just think of it as an opportunity to get lots of exercise! Note that Ni doesn't think about how to change the outer world the way Ne does; it only thinks about how to change *the way we interpret* the outer world. Ni leads you to try and see "through the smoke and mirrors" to what is REALLY going on below the surface, that other people are not perceptive enough to pick up on...so in its unhealthy form, it turns into conspiracy theories, a la Dale Gribble from King of the Hill.
Strong Ni users like being the person behind the scenes who pulls all the strings (even better if most people don't even realize it) and understands the dynamics of everything on a deeper level than everyone else. They are threatened by the idea that there might be any perspective or angle they cannot see, and as such they sometimes overestimate their own ability to fully grasp and work around the attitudes of others.
As with all introverted functions, Ni doesn't pay attention to external conditions outside the self so it doesn't care if anyone else grasps the ideas the same way the Ni user does. To Ni, I get the significance and that's all that matters. Ni songwriters (e.g. Thom Yorke, INFJ) will often write lyrics that could not possibly make any sense to other people without a direct explanation from the writer, but they don't really care because Ni considers intuition such a personal thing that it can't make its perspective/ideas clear to others very easily at all, and frequently doesn't even bother trying.
For another example, Isaac Newton (INTJ) invented calculus and didn't bother telling anyone about it for 20 years. Ne would have been out showing the idea to others and changing it based on their reactions--but not Ni!
As a result Ne is typically much better at putting its abstract ideas into terms that others will understand than Ni.
On a side note: Ni appreciates definitional freedom (and thus is often annoyed by Ti) in the same way Ne appreciates freedom to change its plan of action abruptly (and thus is often annoyed by Te.) Ti users will tend to frame debates by first assigning precise definitions to terms, but Ni often objects to this by wondering: "How are we unconsciously limiting our understanding by assigning such rigid definitions in the first place?" Ni always seeks to escape the unconscious assumptions that limit its understanding of as many different conceptual viewpoints as possible."