I can read functions all day, but I would like to get a real idea of what the thought processes are behind certain MBTI types. So voice your thought processes. For example, I believe that I am an ENTP, and could be ENFP. For example, here an INTJ user described her use of the function....
In my own words, I would say Ni is a lens of perspective.
It's about looking inwards and reflecting on how something is the product of of someone(s) past actions, looking at what it is today, or contemplate on what it might mean in the future. For example an Ne might look at a measuring cup and think "hmm, sure this can used to measure ingredients, but if I want to get creative I could use it as a hat, a holder to hold my pens, a vase to hold my flowers etc." Ne wants to find ways to use a measuring cup outside the conventional way of measuring food ingredients.
Ni on the other hand, would look at that same measuring cup and think, "this measuring cup is used to measure food ingredients, which in the past was the domain of woman since they were expected to carry on domestic duties. Yet today both men and women are expected to take share in such duties, so now this measuring cup is not a symbol of oppression but rather equality. Also notice how this measuring cup is only using the metric system even though I am not American. The measuring cup can also be a symbol of American capitalism and dominance, since it uses a measuring system no other country is using". Ni is not interested in manipulating the cup in any way like Ne, but rather sees how the cup is the product and symbol of different thoughts and movements (feminism, capitalism etc.)