It will be very interesting to see if the arc of human development begins with primitive matriarchal societies and ends with hi-tech matriarchal societies.
It will also be interesting to see if history bears out the current theories that men skew to the extremes. In 20 years women may make up the majority of the white-collar workforce, but will they also dominate at the executive level?
What makes you think that human development started with primitive matriarchal societies? There are anthropological studies of thousands of stone age tribes, very few are matriarchal.
Wikipedia goes even further than my hedged and uninformed "very few" statement and says:
There are no known societies that are unambiguously matriarchal,[2][3][4][5][6][7][8] although there are a number of attested matrilinear, matrilocal and avunculocal societies, especially among indigenous peoples of Asia and Africa,[9] such as those of the Basques, Minangkabau, Mosuo, Berbers or Tuareg. Strongly matrilocal societies sometimes are referred to as matrifocal, and there is some debate concerning the terminological delineation between matrifocality and matriarchy.
which is no doubt enough to keep anyone occupied for hours, but anyway, I see no evidence that early societies were matriarchal.
It will also be interesting to see if history bears out the current theories that men skew to the extremes. In 20 years women may make up the majority of the white-collar workforce, but will they also dominate at the executive level?