Activity not captured includes independent schools and moving abroad, so a red segment would be a factual error. The hatch doubles as the secondary encoding that rescues the neutral/blue pair, which separates at only dE 7.6 as flat fills. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BvdDKvFFSZuMVDH5fEyTob