Sight is light propagation in straight lines; it's physically impossible to see around objects blocking the direct line of sight. Corners create occlusion. Yet neuroscientist Dr. Elizabeth Hartley documented instances in 1999 suggesting expanded visual range. She measured his peripheral vision and found no physiological difference from normal humans. Yet in practical contexts, he seemed to react to threats originating from obscured angles—corners, blind spots—with reaction times inconsistent with information arriving through standard visual channels. Hartley hypothesized: "Perhaps visual expertise—trained awareness of spatial probability—creates a subjective sense of expanded sight. Or perhaps the nervous system processes micro-cues we don't measure in standard tests. He's not seeing *around* corners so much as seeing *through* the information that implies what's behind them."

Vision depends on light traveling straight. But awareness can travel along paths light never takes.