Status: OUT
The event architecture's fully characterized engineering discipline (Observer spatial + Command temporal, spanning all modification dimensions) produces reliable production-grade systems only while Observer's known liability of unexpected cascading updates is managed — the engineering surface is complete, but one of its spatial notification concerns can undermine the whole architecture if unaddressed.
Complete event engineering is reliable only when unexpected-updates liability is managed
Depends on (SL): observer-notification-completes-event-architecture, event-architecture-spans-full-modification-space