Memory for agents to remember why, not just what. Notes on the epistemic graph, EP belief propagation, and building agents that reason over what they know.
Agent memory isn't a filing problem—it's a reasoning problem. Agents need to track what's true, why we believe it, and how beliefs change with evidence. That requires a world model, not just document storage.
Agent memory is more than a database: it is how information is ingested, stored, and retrieved. A breakdown of the three layers of a memory system, the eight types of agent memory, and how models, harnesses, databases, and memory providers package them together.