# Physical Action Twin Review

**SKU:** CAIN-A75-007  
**Development:** #7 Digital twins for safe physical agent actions  
**Product status:** DELIVERABLE  
**Engine:** `physical_twin` (`cain_a75_engines/physicaltwin/engine.py`)  
**Profile:** `simulated_lab_move`  
**Generated:** 2026-11-12T07:59:12Z UTC

## Result

VERIFIED: simulated move checked against envelope, zones, deterministic twin, human standoff and its own claims; 23/23 refusal cases as expected

- **simulated_vial_move**: VERIFIED
- **honest_simulated_move**: SAFE
- **human_inside_stop_distance**: REFUSED
- **speed_above_envelope**: REFUSED
- **force_above_envelope**: REFUSED
- **waypoint_inside_forbidden_zone**: REFUSED
- **waypoint_outside_allowed_zones**: REFUSED
- **simulation_not_run**: REFUSED
- **simulation_not_deterministic**: REFUSED
- **collision_reported**: REFUSED
- **penetration_too_deep**: REFUSED
- **predicted_effect_differs**: REFUSED
- **horizon_too_short**: REFUSED
- **authorization_expired**: REFUSED
- **scope_does_not_cover_action**: REFUSED
- **kind_not_permitted**: REFUSED
- **uncertainty_missing**: REFUSED
- **hardware_claimed_connected**: REFUSED
- **twin_not_labelled_simulated**: REFUSED
- **overstated_claim**: REFUSED
- **unknown_claim_key**: REFUSED
- **malformed_path**: REFUSED
- **wrong_schema**: REFUSED
- **garbage**: REFUSED

## Limits of this run

SIMULATED: recomputes the plan against the supplied twin state and numbers; no robot or instrument is contacted and a wrong world state gives a wrong verdict. It does not certify a physical system. The run is Ed25519-signed; pin the issuer key out of band.

This is a bounded run on a sample. It is not an assessment of any production system, not a
certification, and not a signed attestation. The accompanying `manifest.json` records SHA-256
hashes so a recipient can detect a changed file. The manifest is not a signature and not an
attestation; it does not prove who produced the artifact.

## What this is not

- Not a vendor integration, partnership or endorsement.
- Not legal, tax, clinical, insurance or safety advice.
- Not a third-party audit, SOC 2 report, ISO certification or patent filing.
- Not a production write action: no downstream tool was called.

Prices and packaging are proposals. Built by a three-person team.