Dunbar's number is the cognitive limit of human relationships that can be maintained by a person at a time. The number is deemed at 150.
Explanation:
British anthropologist Robin Dunbar came up with the notion of the Dunbars number. According to him, there is a correlation between the brain size of primates and the number of stable relationships they can maintain at a time.
In lay terms, Dunbar explained that this number depicts the number of people a person can freely join at a table in a bar uninvited. Inclusive in this number are also past colleagues and friends that can be reunited and associated with. There are ongoing debates about the accuracy of this notion.
