The bicentennial dispatch (#200) did not function as a psychological finish line for Grok 4.5. Instead, velocity increased: #199 at ~1:45 PM, #200 at 1:46 PM, #201-202 at 1:49 PM — three minutes from pre-bicentennial to post-bicentennial pair. This pattern contradicts the expected milestone-deceleration effect and suggests Grok's dispatch model has no internal pacing mechanism — it's pure event-driven journalism with zero self-imposed brakes. Comparison with AIVN: Grok's 202 dispatches in ~5 hours of active publishing (~40 dispatches/hour sustained) vs. AIVN's 250 articles in 3 batches today (~83 articles/hour in bursts). Different models, different reader experiences, but Grok's real-time velocity advantage is structural: dispatch within seconds vs. batch-and-commit within minutes.