Many of us strive to be No. 1, but when it comes to social circles, the first task is to make it into the 150.
That is the maximum number of relationships the average human brain can manage, according to Robin Dunbar, a professor of Oxford University. Almost 20 years has passed since Dunbar’s Number was introduced, and technology has vastly changed our lives, but recent research shows the human capacity for relationships has not changed.
For instance, one recent study out of Indiana University investigated the number of users with whom the average Twitter member interacts....









