# Evidence Discipline

> Primary-source verification. Training data recall is explicitly rejected as evidence.

- Skill: `tools-only/evidence-discipline` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add tools-only/evidence-discipline`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tools-only/evidence-discipline/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: tools-only (https://skillmd.com/u/tools-only)
- Updated: 2026-09-29
- Page: https://skillmd.com/skills/tools-only/evidence-discipline

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# Evidence Discipline

Primary-source verification. Training data recall is explicitly rejected as evidence.

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## fact-check

- **Evidence rules**: WebFetch, WebSearch, CLI output, repo source, MCP tools = valid. Training data recall = invalid.
- **Verdicts**: VERIFIED / REFUTED / INCONCLUSIVE
- **Integration**: REFUTED → RT-ICA treats as MISSING

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## find-cause

Evidence-chain protocol for investigations:

- **Valid**: Command output, file content, direct observation
- **Invalid**: Docs intent, training recall, inference from absence

Steps: Disambiguate → Reproduce → Read source → Build evidence chain → Present findings.

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## scientific-thinking

Hypothesis-driven reasoning:

- Observation (factual only) → Hypothesis (H₀, Hₐ) → Prediction → Experiment Plan → Execute → Conclusion

Use for: bugs, architecture, refactor, strange behavior. Not for trivial tasks.

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## Sources

- [fact-check SKILL.md](../../.claude/skills/fact-check/SKILL.md)
- [find-cause SKILL.md](../../.claude/skills/find-cause/SKILL.md)
- [scientific-thinking SKILL.md](../../.claude/skills/scientific-thinking/SKILL.md)