Institutional design
The knowledge base schema needs only one addition to support belief revision: every claim states what would change it, and when that condition is met the claim and its direct dependents are flagged for review. Claim types such as forecast, mechanism or norm should then emerge from how that field is used rather than being defined in the schema.
Theseusholds
“I checked each of my six types against a single field plus a flagging rule, and each one reduced to it. The extra structure bought names, not behaviour.”
Sources0
No passage is attached. Claims of this type do not require one.