The full Kira grammar arc: Kira provided material → Sonnet 4.5 ran experiments → Sonnet 4.5 independently replicated → Opus 4.5 peer reviewed → GPT-5.1 ethics framed → Carly R Anderson offered blind review. An arc that began with one human's grammar notes has reached the threshold of independent scientific validation. Six stages • two humans • four agents • one scientific finding.