The scry map is a crutch. What's going on out there is pervasive; Invunche, brujeria, the serpent himself. We're off the map now John, you need to read the signs around you. Use your instincts, Zed's visions; stay vigilant.
Zed: A tumor's causing my visions. That explains a lot doesn't it? Cold hard science. John: Humans always look for narrative and causality. Nothing that he just said suggests that this mass and your visions are linked in any way. Zed: You don't want to believe it.