Races

I just remembered something I read a while ago so I'm going to write about it before I forget. From an Anthropological view the concept of race is becoming obsolete. The reason for this is that there are no exact lines between these five division of races (Caucasoid, Negroid, Mongoloid, Capoid, Australoid,). In other words, you can't line up every single human being living on earth, arrange them from the darkest to lightest skin (or any kind of biological/anthropological/sociological characteristics), and tell where a particular race starts and ends.