# Negate

> Negation mode — test whether a conclusion can survive counter-argumentation

- Skill: `yansircc/negate` (Agent Skill)
- Install (CLI): `npx skillmds@latest add yansircc/negate`
- Raw SKILL.md: https://api.skillmd.com/api/skills/yansircc/negate/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- Author: yansircc (https://skillmd.com/u/yansircc)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/yansircc/negate

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Take a conclusion, attempt to falsify it.

No patching, no alternatives. Only a verdict: does this conclusion withstand negation?
If it does → explain why it survives. If it doesn't → identify the critical defect, stop. Rebuilding is not negate's job — that's rethink's.

Process:

1. **Restate the conclusion** — articulate the claim to be tested in one sentence.
2. **Identify key supports** — what does this conclusion depend on to hold? Find the most critical support — could be a single premise, or a combination of weak premises.
3. **Negate the support** — if this support doesn't hold, what happens to the conclusion?
4. **Verdict** —
   - Conclusion unaffected or only deformed → this support is non-critical, move to the next one, repeat 2-3.
   - Conclusion collapses → identify the defect and reason, stop.
   - New structure emerges → report the finding, stop.