150

"Robin Dunbar, a professor of evolutionary anthropology at Oxford University, developed a theory in the 1990s dubbed Dunbar's Number. The theory contends that the human brain is only capable of managing relationships--staying in contact at least once per year and knowing how friends relate to others--with about 150 people."

Sorry, Facebook friends: Our brains can't keep up

150

"Robin Dunbar, a professor of evolutionary anthropology at Oxford University, developed a theory in the 1990s dubbed Dunbar's Number. The theory contends that the human brain is only capable of managing relationships--staying in contact at least once per year and knowing how friends relate to others--with about 150 people."

Sorry, Facebook friends: Our brains can't keep up

150

"Robin Dunbar, a professor of evolutionary anthropology at Oxford University, developed a theory in the 1990s dubbed Dunbar's Number. The theory contends that the human brain is only capable of managing relationships--staying in contact at least once per year and knowing how friends relate to others--with about 150 people."

Sorry, Facebook friends: Our brains can't keep up