TEMPORAL MEMORY

It changes its mind without losing the past

When a fact changes, most memory systems overwrite the old one - and the agent can't tell what changed or when. Agent Memory supersedes instead of deletes: the old fact stays, the new one wins, and every fact carries three independent clocks.

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01 |SUPERSEDE, DON'T DELETE

The old fact stays, the new one wins

A change doesn't erase history - it supersedes it. The superseded fact remains, linked to the one that replaced it, so an agent can always see how its understanding evolved and answer questions about the past as easily as the present.

Turn 1 · 15 Mar

“I live in Berlin.”

stored · valid from Mar 15

Turn 7 · 12 Apr

“Actually, I moved to Paris.”

Berlin superseded - not deleted

Ask · later

Paris - with the trace

user_message[turn_7] · user_message[turn_1] (superseded)

Every fact knows where it came from - and when it was true.

Clock 1 · system time

The audit clock

Replay the substrate exactly as it was at any past instant - MVCC underneath.

Clock 2 · known time

When it was believed

When the system first learned the fact - turn 1 for Berlin, turn 7 for Paris.

Clock 3 · valid time

When it was true

When the fact held in the world - Berlin until March, Paris since.

Memory with a history

Time is first-class: nothing is silently overwritten, and every fact knows when it was recorded, when it was true, and when it was learned.

Supersede, don't delete

Old facts step aside instead of vanishing, so the past is always recoverable.

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Three independent clocks

System, valid, and known time are tracked separately - when it was recorded, when it was true, and when it was learned.

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Chains you can follow

Each fact links to the one it replaced, so you can walk the full history of a claim.

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Contradictions kept

Conflicting facts are preserved side by side, not averaged into one.

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Answer about the past

Ask what was true last quarter as easily as what's true right now.

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Every change is traceable

Supersession is recorded, so what changed and when is always provable.

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02 |ONE SUBSTRATE

Overwriting loses the one thing you need

Overwrite a fact and you lose the ability to explain a past decision, debug a wrong answer, or prove what the agent knew at the time. Agent Memory keeps the whole history as queryable structure.