#9) Rationale

Preface node heading:9-rationale:885

#Content

This pattern instantiates P‑10 Open‑Ended Evolution by making generation‑selection‑publication operational at the on‑ramp: readers get just enough shared vocabulary to run search as standard practice. It aligns with Didactic Primacy (P‑2) and LEX‑BUNDLE (E.10) by keeping definitions plain‑first and scale‑lawful, and with Patterns Layering (P‑5) by pointing to C.17–C.19 for formal anchors without tool lock‑in. The post‑2015 line (MAP‑Elites → CMA‑ME/MAE → Differentiable QD/MEGA → QDax; POET/Enhanced‑POET/Darwinian Goedel Machine) normalised quality‑diversity and open‑endedness as first‑class search objectives; this glossary surfaces those ideas as publication standards, not tool recipes.