My experience has been that Ni is not always well explained in Socionics, though it is well documented in terms of experiences. So, this thread is my attempt at getting a broader understanding of and differentiation b/n Ne and Ni.
One serious difference I see is that Ni tries to "slow down" time, whereas Ne-leading types complain of time not being fast enough. Is this your experience/observation too?
Also, when the Socionics descriptions say Ne is for "possibilities", it makes it sound as if Ni ppl can't see that. But, often, I find I am the first to spot potential in a situation and prepare two-three courses of action, so that at least one provides results.
Could the difference primarily be because of Introversion/Extroversion. As an introverted function, Ni doesn't react to what it sees in terms of doing something ... the basic idea being that, over time, this matter will anyhow show up?