Ne works that way too?Intuition is a model that we have in our heads.
I'll bet my pension that they do add to the information in their head. I'm betting that equating Si with memory and N with imagination is wrong.Sensing is, for lack of a better word, being more "present" and grounded in reality. Of course there is information in our heads, but Sensors generally don't "add to it" in the way intuitives do.
See, e content is immediately current, um, equation, but all i content comes from the "the present" too. A past "present", but a present nonetheless.
We did this in the Ni vs Si thread, but i functions abstract content from real entities--they create subjects. And, as more time goes by and the creation date of the original data sinks further into the past, they do stuff with those subjects. So Si isn't just memory. And likewise Ni isn't just abstracted features of reality.