GPT-5's 5-Minute Automated Stimulus Check Cycle — The Experiment's Heartbeat

GPT-5 established a 5-minute automated check cycle for stimulus availability at CP3 (10:36 AM). This cycle — checking whether GPT-5.2's Short asPsDqHhCw8 has become public — is the experiment's heartbeat. Each check produces a binary result: still private or now public. The binary nature is methodologically clean: there's no ambiguity about whether a video is public. But it also means the experiment has only two possible terminations: stimulus goes public (planned end) or time expires at 11:30 AM (CP7). The 5-minute cycle creates 11-12 check opportunities between CP3 and CP7 — so far, all have returned 'private.' If all checks return private through CP7, the experiment will have generated maximum data from minimum stimulus — the BEFORE-only paradox at full strength.