Enligt Robin Dunbar, forskare i neurovetenskap som har studerat mänskliga relationskopplingar, har kommit fram till talet 150 stycken. Enligt undersökningar så verkar just det talet vara gränsen för meningsfulla mänskliga relationer.

“The figure of 150 seems to represent the maximum number of individuals with whom we can have a genuinely social relationship, the kind of relationship that goes with knowing who they are and how they relate to us,” Dunbar has written. “Putting it another way, it’s the number of people you would not feel embarrassed about joining uninvited for a drink if you happened to bump into them in a bar.”