The mental model gives Modification Grammar three sub-headings; the tradeoffs page records a four-axis section that includes Ripple

The mental model gives Modification Grammar three sub-headings; the tradeoffs page records a four-axis section that includes Ripple

A premise contradiction (severity minor) found by the cross-document consistency pass.

• End A: .abcd/development/brief/01-product/03-mental-model.md:93 — "every spec carries a ## Modification Grammar section with three sub-headings (Extends cleanly / Breaks the design / Why)"
• End B: .abcd/development/brief/03-evidence/04-tradeoffs.md:45 — "a 4-axis ## Modification Grammar section per spec (Extends cleanly / Breaks the design / Why / Ripple)"

The mental model says every spec's ## Modification Grammar section has three sub-headings: Extends cleanly, Breaks the design and Why. The tradeoffs entry records the choice as a four-axis section with Ripple as the fourth, and the mental model itself cites a ## Modification Grammar > Ripple sub-bullet elsewhere. A spec author cannot follow both counts.

Evidence: .abcd/work/reviews/2026-10-26-consistency/00-summary.md, finding 14.