# Jury Q&A

## 1. Why Is This Not Just An Animation?

The animation is driven by a deterministic state machine, classifier, sensor state, actuator state, metrics and event log. The scene visualizes domain state instead of playing a decorative timeline.

## 2. How Is Classification Connected To The Actuator?

`classifyItem` returns B/C/D. The simulation maps that category to `ROUTE_TO_B`, `ROUTE_TO_C` or `ROUTE_TO_D`, which changes gate and pusher states and draws the physical route.

## 3. How Do You Prove The Route Was Correct?

The decision tree shows thresholds and PASS/FAIL, the scene shows the selected command and route arrow, and Event Log records state, command/category and item id.

## 4. Where Are OZON Rules Reflected?

The rules are explicit in classification limits: min/max dimensions, roundness threshold and C priority. Criteria Coverage maps these rules to scenarios and docs.

## 5. How Does The Operator Safely Stop The System?

The `emergency_stop` scenario enters `EMERGENCY_STOP`, stops conveyor target speed and requires Reset. In Presentation Mode, Safe Demo requires confirmation before fault scenarios.

## 6. What Happens On Sensor Failure Or Low Confidence?

Low confidence is logged as a warning. The system still applies deterministic dimensions/roundness rules as a fallback and shows this in the panel.

## 7. Why 2D, Not 3D?

2D is enough for MVP validation: it shows geometry, timing, sensor positions, routes and state transitions without spending effort on heavy rendering.

## 8. What Is Needed For A Physical Prototype?

Replace pseudo-CV with a real CV service, connect PLC/robot telemetry, calibrate sensor latencies, add hardware interlocks and persist event logs.

## 9. Where Is Computer Vision?

The MVP uses pseudo-CV: bbox, dimensions, confidence and latency are derived from mock items. The architecture keeps CV output separate from classification, so a real CV service can replace it later.

## 10. How Is Classification Correctness Proven?

The decision tree shows PASS/FAIL for dimensions and roundness, actual values, thresholds and final category. Tests cover key boundary cases.

## 11. How Are Dimensions And Circular Section Handled?

Dimensions are checked first against min/max width, depth and height. If they pass, roundness is checked against threshold 0.8.

## 12. Why Does C Have Priority Over D?

Oversized or undersized items are operationally unsafe for the main line and must be diverted first. Therefore dimensions check precedes roundness.

## 13. How Is Synchronization Shown?

Cycle timeline shows state order, simulated timestamps, durations and status: done, active, pending or skipped.

## 14. How Does The Actuator Part Work?

The stop-gate fixes the item. B opens the gate, C extends pusher C, D extends pusher D, then mechanisms return home.

## 15. What Happens On Jam?

The system enters FAULT, conveyor target speed becomes 0, actual speed decays toward 0, and Reset is required.