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Paul BakausandClaude Opus 4.7
d37be057ea
The v2.1 ablation sweep (n=10 × 4 brand niches × 3 providers, anchored to commit 54c3a502, ~544 cells) confirmed these four rules carry no weight in the skill: - skill-typo-no-all-caps-body — duplicate of brand-ban-all-caps-body; brand version is more specific (reserves caps for labels + headings) - skill-typo-codex-hero-ceiling-repeat — the codex-block restatement of skill-typo-hero-ceiling didn't add reinforcement on top of the universal rule - skill-typo-scale-ratio — duplicate of brand-typo-modular-scale; same signal, brand version carries the clamp() / fluid implementation detail - skill-typo-font-count — models don't reach for ≥4 font families in any niche we test, so the rule has no measurable effect Each deletion is the Agent A / B / C / D Phase-2 audit recommendation; none of the four ever validated under either prose state. Adds EMPIRICAL_VALIDATION.md naming the seven cross-provider winners as the trustworthy core, and documents the systemic findings (self-priming, detector saturation, vocabulary anchoring) so future skill edits can avoid the same traps. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>