An extract from the discussion following Chris Knight's talk Did Matriarchy Ever Exist? Radical Anthropology Group at Daryll Forde Seminar Room, Anthropology Building, 14 Taviton Street, London WC1H 0BW on 16 January 2018. The question asked was: [If there is supposed to be menstrual synchrony, and female menstrual solidarity], what about women who don't menstruate [because they are already pregnant, lactating, or in menopause]?