On two different occasions, the children visit a seer called the Happy Medium, who looks into her crystal ball to show them a better look at the Black Thing. One of the children asks if she can see what happens in the following excerpt: "Can't she see what's going to happen?" Calvin asked.
"Oh, not in this kind of thing." Mrs. Whatsit sounded surprised at his question. "If we knew ahead of time what was going to happen we'd be–we'd be like the people on Camazotz, with no live