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> nor do they provide the brain an interpretation of what they perceive

> What it gets from the body is raw physical measurements

No, sensory organs like eyes do a lot of processing ("interpreation"). They certainly don't send "raw physical measurements" to the brain.

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And even then, it's just sampling. Much of what we "see" is a prediction, and there are plenty of optical illusions out there premised on that (plus VR techniques like foveated rendering that take advantage).

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