Physics Rules:
- Physical description only: skin texture, muscle tension, bone structure
- Motion vectors: angle°/displacement cm/velocity m·s⁻¹
- Micro-expression quantification: brow furrowed Xmm, pupil dilation Xmm
Example
- ✗ "he looks terrified".
- ✓ "skin sheen with cold sweat, neck tendons taut; head recoils 12cm at ~1.5 m·s⁻¹, ~20° back; brow raised 5mm, eyes widened, pupil 6mm, lips parted 4mm."