AI agents making consequential business decisions lack the canonical, domain-aware record necessary for trustworthy operation, relying instead on session logs or conversation history that cannot serve as a reliable system of record. Marc Klefter, Lead Product Architect at Axoniq, argues that event sourcing provides the natural pattern for this need, creating an immutable, sequenced record of meaningful state changes grounded in the same business events that transactional systems already recognize. With appropriate projections, this event-sourced record becomes the episodic memory agents require to be auditable, replayable, and explainable.