The mob that hounded [memo author James] Damore was like the mobs we've seen on a lot of college campuses. We all have our theories about why these moral crazes are suddenly so common. I'd say that radical uncertainty about morality, meaning and life in general is producing intense anxiety. Some people embrace moral absolutism in a desperate effort to find solid ground. They feel a rare and comforting sense of moral certainty when they are purging an evil person who has violated one of their sacred taboos.