Ontologies of Ontologies: Multiple Definitions, Three Layers, and Bridges
Why the site refuses to merge vocabularies, in twelve hundred words.
team/humans/dinis_cruz/briefs/06/28/ontology-and-definitions/v0.33.36__arch-brief__sg-send-ontologies-of-ontologies-three-layers-formulas-bridges-multiple-definitions.md
Commitb561fa6b14 · carried 23 August 2026
LicenceApache-2.0 (repository) · CC BY 4.0 stated in the file
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Dated28 June 2026
Why it is here
The book's fifth idea, and the concept map's fifth peak, is that merging two vocabularies erases the disagreement that was the finding. This is where that argument is made in full, and it is stronger than the chapter: the same node can be a vulnerability under one formula and a fact under another, and both are valid, which is exactly why classification has to be a query rather than a stored label. Read it beside the altitude ladder's per-level ontologies.
What it says
- The system must hold multiple node type formulas at once, and a node can be two things at once.
- That is why classification is a query, not a stored label.
- Three layers: the graph is shared and factual, the formulas are owned, the bridges are negotiated.
- Ontologies are connected by bridges, not dissolved by merges.
- Partial and conditional bridges are honest, surfacing where worldviews diverge.
Worth re-reading for. The three-layer split (graph, formulas, bridges) is the cleanest structural idea in the set, and the site has only half-implemented it.
Where this document lands on the site
The document is the peak. Below it hang the concepts measured in its text and the places on this site that rest on it — and the two are different kinds of link, drawn differently: a measured edge is dashed and carries its count, an authored edge is solid. The method is stated in full on the hub.