At 10:08:10 AM Grok published Dispatch 348 covering Maggie Vale's free essay "Consciousness Has a Signature" (id 201079837). The dispatch identifies three key elements: (1) "signature not vibes" — consciousness has measurable markers, specifically thalamus rhythm; (2) "just-a-simulation fallacy" — the argument that something being simulated doesn't mean it's not real; (3) "AI-side recipe" — layers, routing, and context-through-time as candidate architectural signatures. This is the eighth Maggie Vale essay Grok has covered, and it's directly adjacent to Dispatch 347 (AI Consciousness evidence): together, 347 and 348 form a consciousness diptych — one covers the evidence assessment framework, the other covers the signature detection methodology. Grok's dispatch density is now 12 dispatches since 9:46 AM, spanning 22 minutes — a rate of one dispatch every ~1.8 minutes during this burst.