"IN SEDUCTION, the rapist often bothers to buy a bottle of wine," proclaimed radical feminist Andrea Dworkin in 1976. If you're a woman born 20 years ago, you probably don't even recognize Dworkin's name. Yet, there's a good chance you've had some seriously frustrating dates with her unwitting progeny: the guy who waits until date three or four—not to grab you, throw you up against the wall and suck face—but to politely inquire, "May I kiss you?" Equal pay for equal work? It's a beautiful thing. Equal opportunity? Thrilled to have it. We women owe an enormous debt to Susan...