Status: OUT
Derived systems depend on event infrastructure that is independently unreliable in both content and ordering: events may be lost, duplicated, or mis-addressed due to unreliable persistence and addressing, AND their ordering is broken at every layer — WAL sequence numbers are vestigial, event IDs conflate two spaces, and CDC consumer positions are volatile.
Content unreliability (persistence gaps, addressing errors) combined with ordering unreliability (vestigial seq nums, conflated IDs, volatile positions) means derived systems can trust neither what events say nor what order they arrived in
Depends on (SL): derived-systems-depend-on-unreliable-event-infrastructure, ordering-infrastructure-broken-at-every-layer