Epistemic Control Systems: Anchoring on Kafka

This post defined the invariants. This one anchors them on Apache Kafka, running live, broken deliberately. What this is An Epistemic Control System governs belief about reality, not reality itself. Six primitives exist in every system of this class: Primitive Kafka equivalent Observation Producer message Time Window Topic partition (ordering + scope, time-based windows are defined downstream) Synthesis Broker validation path (admissibility checks only, no semantic processing) Snapshot Committed log entry Publication Gate Broker write/ack (system-level commit) / Offset commit (consumer acknowledgment) Authority Pointer Consumer group offset (Kafka determines what is accepted into the log, truth, not what that data means.) Seven invariants govern these systems. Violate one and you have not degraded the system. You have changed what it is. The primitives on Kafka 1. Observation The producer message is an observation. Raw input. Uncommitted. The producer's belief that it sent something is