# Black Mirror S3E2 — Playtest **Case Family:** Neural and Perceptual Sovereignty **Case Status:** Load-Bearing **Related:** [[Black Mirror]], [[Black Mirror Episodes]], [[Read-Write Separation]], [[Perceptual Sovereignty]], [[Brain-Computer Interfaces]] --- ## Case An experimental neural game reads Cooper's fears and constructs a personalized experienced reality from them. The interface does not merely display content. It writes directly into the perceptual field through which he distinguishes world, memory, threat and self. The case supplies a precise authority boundary: permission to sense cognition is not permission to author cognition. A system capable of detecting fear does not thereby gain legitimate authority to instantiate fear as reality, particularly where risk, duration and exit conditions remain opaque. ## Constitutional Questions - What consent is valid for an interface whose experiential risks cannot be adequately described? - Who controls exit when the user cannot distinguish simulation from world? - Does measurement consent include permission for perceptual intervention? ## Key Insight **Reading cognition and writing cognition are constitutionally different operations.** ## See Also [[Ownership of Mind]], [[World Simulation (Control Substrate)]], [[Exit Rights]], [[Ring Zero]], [[articles/Escape Hatch in the Skull|Escape Hatch in the Skull]] ## Sources / Provenance - Primary fictional source: _Black Mirror_, S3E2, “Playtest.”