N colors input processes in that one has a bias toward the linkages more than the entities of information at any level of granularity; however, linkages and entities can only be separated in theory not in reality.
N and S symbolize orientation differences toward the same information which affects the order of information processing - information cannot be separated from rationalization in a dynamic control system.
To use a crude example, two balls are connected by a string; the balls and string each by themselves can form three entities or them combined can form one entity. N's first inclination may be toward how such a configuration would function ignoring the details of the entities as opposed to S first focusing on its physical details then moving to function; the former is top down and the latter is bottom up.