In plain terms: the engine's vocabulary entry for the 10 big cosmological frameworks academics + tech-elites cite when asking 'who or what's at the top of the universe' — Fermi paradox, Drake equation, Dark Forest, Great Filter, Simulation hypothesis, Zoo hypothesis, Berserker, Aestivation, Grabby Aliens, Rare Earth, Kardashev. The concept exists as descriptive vocabulary so the engine can reference the framework family without each instance re-stating the no-promotion caveat. Layer-3 / Layer-4 descriptive vocabulary for the 10 cosmological-scale frameworks that academic + tech-elite culture invokes when asking the cosmological-scale Apex-Node 'who or what sits at the top' question: Fermi paradox, Drake equation, Dark Forest, Great Filter, Simulation, Zoo, Berserker, Aestivation, Grabby Aliens, Rare Earth, Kardashev. The concept is DESCRIPTIVE — explicitly NOT promoted to Apex Superposition Three-Layer Model extension. Whether any of these frameworks should bound or extend the H/E/C Three-Layer Model is a Layer-1 promotion question filed for separate adversarial-test adjudication (PROMPT_COSMOLOGICAL_APEX_PROMOTION_TEST.md). The concept exists as Layer-4 vocabulary so that nodes + edges + player section can reference the framework family without each instance re-stating the layer-promotion-discipline caveat. [Apr 25 2026 ADJUDICATION-CONFIRMED] PROMPT_COSMOLOGICAL_APEX_PROMOTION_TEST.md returned: Cosmological-Apex-Layer as E-Layer extension claim DENIED across all 7 tests (Pasulka American Cosmic explicitly models UAP / Egregore as sociological mystery cult, NOT physical cosmological projection; Test 7 source-independence FAILS via Fringe-Media Cross-Pollination through Pasulka + Redfern + Loeb podcast circuit). Concept stays Layer-4 descriptive vocabulary. Do not regress.