1. Closeness was defined by Bavelas (1950) as the reciprocal of the farness,that is:

2. The Closeness centrality of a node measures its average farness (inverse distance) to all other nodes

3. Thus, Contiguity is not subsumed by metrics for the distance between distinct locations, but rather encloses multiple dimensions of nearness and farness within a continuous topology

4. The highness and farness of the main peak emphasize a king of central value which is just the value shared by Chinese literati and that's the so-called world cares.