Ne keeps looking outward, and finds something cool.
Ni looks at it, admires how cool it is, and starts figuring out more stuff about it.
Ne starts looking outward to find something else cool.
Ni says, "Waitaminute, I'm not done looking at this, yet," and points out a cool aspect of the original thing.
Ne leapfrogs off of the new cool aspect and looks outward for something else.
The Ne attitude tends to assume that the interesting discoveries lie outward.
The Ni attitude tends to assume that the interesting discoveries lie inward.
Ne and Ni show each other that the interesting discoveries lie in BOTH directions.