Power has been entwined with the evolution of male manufacturing jobs since the industrial revolution, said Alice Kessler-Harris, a professor emerita of history at Columbia University. Although many of the earliest factory jobs in places like textile mills were held by women who could be spared from the farm, men reserved many of the highest-status, highest-paying jobs. “It isn’t new,” Professor Kessler-Harris said of sexual harassment and male resentment. “It’s as old as male culture. The men assumed the best jobs, the skilled jobs, were theirs. If a woman dared to enter them, God help her.”