Earlier this year, women became the majority of the workforce for the first time in U.S. history. Most managers are now women too. And for every two men who get a college degree this year, three women will do the same. For years, women’s progress has been cast as a struggle for equality. But what if equality isn’t the end point? What if modern, postindustrial society is simply better suited to women? A report on the unprecedented role reversal now under way— and its vast cultural consequences.