https://www.factum-orm.com/blog.html Essays on fact-based modelling, ORM 2 and the fact layer AI agents are missing. https://www.factum-orm.com/blog-orm2-actions-and-rules.html https://www.factum-orm.com/blog-orm2-actions-and-rules.html Mon, 07 Sep 2026 09:00:00 GMT A little-cited paper on dynamic rules in Object-Role Modeling turns out to be an action-schema language for agents. Here is what it got right, the one thing it left unfinished, and how to model agent actions today in a formalism a validator can actually check. https://www.factum-orm.com/blog-fact-layer-vs-ontology.html https://www.factum-orm.com/blog-fact-layer-vs-ontology.html Thu, 03 Sep 2026 09:00:00 GMT Your ontology says what exists. Your agent needs to know what is allowed. Those are different artifacts, and the gap between them is where agents quietly go wrong. https://www.factum-orm.com/blog-fact-layer-for-agents.html https://www.factum-orm.com/blog-fact-layer-for-agents.html Sun, 30 Aug 2026 09:00:00 GMT A nullable column can't tell your coding agent whether the rule was optional or nobody ever decided. Here's the layer that can.