Optional 60-minute application session. Bring the specified artifacts and work with a peer or coach. Do not treat a prepared plan as an authorized live test.

Bring: W1–W4 and one standard plus one exception case. Agenda: 5 minutes restate outcome; 15 inspect boundary and measures; 20 challenge the three most consequential claims; 15 refine functions and constraints; 5 confirm evidence actions. Ask: “Which part of this brief names today’s solution?” “What would change if this constraint were false?” Output: revised outcome, ledger and investigation priorities. Between sessions: retrieve the missing sources and draft W5 principles.