Task 74: 分析の再検討 — nice-friend による視点補完
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Task 074: 分析の再検討 — nice-friend による視点補完
Status: DONE
Motivation
Human directive: 「分析にあたっては、見落としている視点を nice-friend やこれまでの人間からの指示などから得ること。新たな視点が入った場合は、分析を再度やり直すこと。特にラフな解析でも妥当とは判断が付かなかったものや、疑問点が残った部分について重点的に。その再試から新たな視点や疑問が発生することもあると思う。」
Codex Consultation Results
Consulted OpenAI Codex (gpt-5.3) with 5 specific questions about overlooked physics. Key feedback:
- Ship mass: Power as discriminator (48kt → TW, 300t → GW). Already covered in cross-episode.json.
- EP02 margin: Reframe from "solar escape margin" to "Saturn intercept probability with TCM budget."
- EP04 plasmoid: Add dose model quality (particle spectrum + secondary radiation) and Voyager 2 calibration limits.
- EP05 nozzle: Thermal cycling fatigue (startup/shutdown) consumes additional nozzle life beyond steady-state burn time.
- Cross-margin coupling: Treat as coupled reliability problem — cascading failure paths exist.
Changes Made
EP02 (ep02.json)
- Transfer 03 explanation: Added reference frame clarity (heliocentric inertial), Saturn intercept framing, B-plane precision analysis, Cassini TCM comparison
- Exploration 03 summary: Added Codex-informed reframing of "escape margin" as intercept accuracy problem
EP04 (ep04.json)
- Transfer 04 explanation: Added dose model precision note (particle spectrum, secondary radiation, magnetic vs absorptive shielding), plasmoid duration variability (±50%), worst-case margin analysis
EP05 (ep05.json)
- New exploration-08: Nozzle thermal cycling damage fraction model
- 4 scenarios: steady-state, thermal cycle, cycle+creep, 2-cycle alternative
- Finding: Thermal cycling may push actual margin to zero or negative
- Insight: Kei's refusal to ignite was engineering-justified, not overly cautious
Cross-episode (cross-episode.json)
- New section: "マージン連鎖分析 — 制約間の結合"
- Cascade paths: nav error → correction burns → propellant → accel → exposure
- Sensitivity matrix (Jacobian-like) for margin perturbations
- Probabilistic assessment: chain success ~30-46%, "extraordinary" not "implausible"
- Response to Codex's "0 implausible is optimistic" concern
- Updated 総合評価 to reference coupling analysis
Test Results
- 966 TS tests passing (0 failures)
- Site builds successfully: 5 episodes, 24 transfers, 5 summaries