Sunday's Mad Men brought us three main plot lines. They all had to do with angry women.
The episode hinged on a decision, and flipped back in time repeatedly to be run through from our various characters' points of view. That decision—let's call it the "hinge moment"—comes at the beginning of the episode, when Don decides to take Megan with him to check out a potential client, Howard Johnson's, a decision wrought by Roger Sterling, who says (and we see this at least twice), "It was a dumb idea." Though it's not quite clear what he means, exactly, much of our characters' decisions in this episode could fit the bill.
But before that moment happens, we see Peggy with her boyfriend, in her apartment, getting ready for work. There is trouble in this relationship; Peggy is preparing for an important presentation, and Abe doesn't get it, feeling like an afterthought, feeling like she puts her career before him. "You want to take me to work with you and put me in a drawer and pull me out when you're bored," he says, and when she responds, "I need a second when I walk in the door," to his charges that half the time she doesn't want to have sex, he says, "Most men wouldn't even have this problem," meaning not sex, but her. Yes, this is a career-woman problem, and Peggy has it with Abe because she has chosen her career, he thinks, above him. (Which, to be fair, she probably has—and that makes her all the more angry when it doesn't go well.)