Chapter 09 · roles

Domain Specialist playbook

Interpret layer-specific evidence and improve the guide without taking over unrelated ownership.

1 min read·Updated 2026-07-24·1 role path
01

Primary responsibility

A domain specialist contributes depth at the point where the evidence reaches their layer. The goal is not to restart the investigation in specialist language. The goal is to interpret the committed evidence, identify the next discriminating signal, and make the supported boundary understandable to the rest of the team.

02

Enter with context

Review the pain statement, affected scope, healthy comparison, evidence ledger, eliminated boundaries, and current gate before requesting new data. Ask for the smallest additional evidence set that can change the decision path.

03

Explain confidence

State why the evidence supports or weakens a boundary, what alternative remains, and what would falsify the current interpretation. Avoid absolute claims when the data only supports a probable layer or component class.

04

Improve the system

After the incident, identify missing guide questions, ambiguous options, weak expected signals, unsafe command language, or ownership gaps. Submit a guide improvement that is reusable and vendor-neutral.

05

Expected outputs

Technical interpretation, supported fault boundary, confidence statement, next evidence request, owner route, and guide feedback.