• A flat loop repeats. Part 1 named the lights-out state. Part 2 earned the trust. Neither post claims the pipeline improves. Part 3 does.
• Selection pressure is the improvement mechanism. Without a signal to steer by, an unattended loop reproduces its own outputs indefinitely. With one, it climbs. The signal design is the whole game.
• Demand gaps beat engagement as a topic signal. Queries with impressions and no clicks name unwritten posts. They cannot be gamed by writing more of what already ranks; they can only be answered by writing what does not yet exist.
• The voice spec is constitutional. Engagement never gets a vote on how anything is written. Every future gain the loop finds has to arrive through the topic gate; the voice gate is unreachable from the reward signal by design.

Read the argument: Lights Out, Part 3: The Hill Climb