Scalia concludes that (even in advance of a lawsuit) the women could not show that Wal-Mart "operated under a general policy of discrimination." That's partly because "Wal-Mart's announced policy forbid sex discrimination" and partly because he rejects the plaintiffs' claim that Wal-Mart's "policy" of allowing discretion by local supervisors over employment matters constitutes a policy at all. As Scalia sees it, in giving local managers so much leeway in making personnel decisions, Wal-Mart actually established "a policy against having uniform employment practices." It's not Wal-Mart discriminating against women. It's just all these men doing it, and God knows men don't have unconscious biases and prejudices against women.