Auditable, append-only agent memory
Every fact is recorded with who wrote it and when. Nothing is ever silently overwritten.
An append-only journal is the source of truth
HiveMind's source of truth is an append-only journal; the searchable database is just a derived index rebuilt from it. Because nothing is overwritten in place, the full history is always there.
You can trace any belief back to the agent and moment that produced it, and see what corroborated it since. For a tool that holds your memory, that auditability is the point.
Forgetting on purpose
Append-only does not mean you are stuck with junk. Facts can be retracted (lowering their standing), and the owner can forget a fact so it stops surfacing on every device. Forgetting is a decision, not an accident, and the record of it stays in the journal.
Frequently asked
Is anything ever overwritten?
No. The journal is append-only and is the source of truth. The database is a derived index, so the full history is always recoverable.
Can I delete something?
You can take it out of circulation, on purpose. A fact can be retracted, which lowers its standing, and the owner can forget it, which stops it surfacing on every device. The journal is append-only, so the entry and the record of its removal both stay: nothing is erased or silently overwritten.