Washington, D.C.— Defendant Betty Dukes stands alone on the steps of the U.S. Supreme Court after oral arguments in Wal-Mart v. Dukes, a challenge to her whopping class-action sex-discrimination suit against the mega-retailer. The case, known by Dukes’s supporters as “Betty v. Goliath,” concerns whether female Wal-Mart employees were unfairly denied promotions. It is being heard by a court that has just seen two landmark female appointments. How will the three female justices influence their male peers? We’ll know next fall, when the court rules.