(via WikimediaCommons) uhh, yeahhh… rr-r-r-right!?Anthropologist Robin Dunbar argued some years back that due to constraints of the primate neocortex the number of "friends" or 'stable inter-personal relationships that can be maintained' by an individual is somewhere in the neighborhood of 150, which became known as "Dunbar's Number." Some felt Dunbar was on the mark (perhaps even too high