Despite appearances to the contrary (fostered by anthropocentric nursery stories), a distinct role for male parents does not exist in nature. Fatherhood was invented by humans during the agricultural revolution about six thousand years ago. Symbolized by the new god-king, it incorporated the mother's originally superior role in primate families—the control or ownership of children. The male deity could even make his own offspring without female help. This inflated political figure was designed to compensate for the male's modest role in procreation, once the facts of life were known. Patriarchy was born out of an envious attack on mothers.