# L4 — Verdict (construct feasibility; no score)

**Job:** `lane-L4-boundary-permeability`  
**Question answered:** Can boundary permeability be measured as cross-group **interaction**, distinct from polarization, without collapsing elite legislative reciprocity into S2?  
**Not answered:** Any L4 numeric score, Rigidity Index, or E2/S2 authorization.

## Dispositions

| Element | Disposition |
|---------|-------------|
| Elite legislative cooperation via CBS **offer** (L4-A1) | **KEEP_CANDIDATE** |
| Elite legislative cooperation via CBS **attract** (L4-A2) | **KEEP_CANDIDATE** (separate; no composite) |
| Offer/attract pairing + denominator audit (L4-D1) | **KEEP_CANDIDATE** (preserve contrary directions) |
| Congress.gov raw replication (L4-A3) | **MODIFY** |
| Bipartisan network graphs / caucus ties (L4-B1/B2) | **MODIFY** |
| Compulsory committee co-service as permeability (L4-B3) | **INSUFFICIENT** |
| Mass cross-party social relationship surveys (L4-C*) | **MODIFY** |
| GSS trust as elite reciprocity (L4-D3) | **INSUFFICIENT** (S2 only) |
| Civic bridging population panels (L4-E1) | **MODIFY** |
| Bridging-program admin counts (L4-E2) | **INSUFFICIENT** |
| N3 distance / unity / S1 affect as L4 sensors (L4-X*) | **INSUFFICIENT** (polarization-collapse) |

## Path summary

**KEEP_CANDIDATE** for an **elite legislative permeability** track that **reuses audited E2-N4 offer & attract separately**.  
**MODIFY** for mass social / civic bridging / network-topology extensions.  
**INSUFFICIENT** for polarization rebadges, S2 trust-as-elite-reciprocity, and forced co-presence networks.

**Elite legislative reciprocity ≠ S2 generalized societal reciprocity** — preserved.

MODEL_CHANGE=NO. No L4/E2/S2 score authorized. No composite.