Memory and authoritative state
A checkpoint can persist too, but its contract is resuming execution, not learning a preference.
Links containing ?t= open the video at a specific second.
The ideas to retain
Working state: what execution needs now
Let \(Wt\) denote the working set used for one concrete decision. It may contain:
Episodic memory: events situated in time
Episodic memory represents something that happened. A useful episode usually retains at least:
Semantic memory: consolidated knowledge, not copied history
Semantic memory represents knowledge we want to reuse without replaying every episode that produced it.
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Read the reviewed transcript
This video has no narration. This transcript reproduces its on-screen text; it does not invent a spoken track.
Lifetime is not meaning
An episode records an event; semantic memory consolidates a preference.
Either can persist. Storage does not determine what the record means.
A checkpoint can persist too, but its contract is resuming execution, not learning a preference.
Remember what happened and when
In episode e17, the user requests follow-up by email.
e24 and e31 add observations. Each event retains its time, subject and provenance.
The sequence describes specific experiences; it is not yet a universal rule.
A preference is derived
Three episodes support a preference for email.
Consolidation creates a reusable record linked to those three episodes.
A later correction can supersede it. Keeping only the conclusion loses its basis.
Memory does not grant access
Memory says the account had a Pro plan yesterday.
The billing source says paid access is revoked today.
Current authorisation governs the operation. Relevant memory cannot replace the system of record.
Persistence needs a policy
The model proposes saving an observation. The proposal is not durable memory yet.
The application checks subject, sensitivity, duplication and evidence before writing.
A proposal from another tenant is rejected; a valid observation keeps its provenance.
Correct the derivatives too
The email preference feeds both a memory record and a user summary.
The user changes it to phone calls. The event invalidates dependent representations.
Updating only the original leaves stale copies. Lineage makes those copies discoverable.
