Which version?
Model, software, policy and regulatory corpus.
NELSIA · Incident · control · litigation
The question is not only what happened.It is what you can reconstruct.
NELSIA is designed to keep system version, available facts, applied rules, human review, action and evidence connected. It does not decide liability or causation; it makes the technical and governance record easier to examine.
Eight reconstruction questions
Which facts?
Known inputs, context and unresolved information.
Which rules?
Activated rules, exceptions and evidence requirements.
Which output?
System result, recommendation or proposed action.
Which human?
Review, override, approval, refusal or missing intervention.
Which effect?
What was actually executed, blocked, limited or deferred.
Which evidence?
Events, hashes, versions, artefacts and exported references.
Can it be replayed?
Historical context restored for comparison and review.
Replay
Replay restores context. It does not rewrite the past.
Historical replay can help compare versions and decisions. It does not make an old decision legally correct, determine fault, or predict the outcome of a dispute.