A Shroud’s boundary is almost a living thing. It responds to the thought patterns of those who enter it. If the patterns do not resemble those of the Shrouders . . . it fights back. It alters spacetime locally, creating vicious eddies of curvature. Curvature equals gravitational sheer stress, Doctor. It rips you apart. But the right kinds of mind . . . the Shroud admits them; guides them closer, protects them in a pocket of quiet space.’
