vat brains often philosophize over whether they're actually brains in bodies but usually dismiss it as absurd, why should for example someone go the trouble of engineering the human body and all the world around it as opposed to vats, it just totally fails occam's razor
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or as the famous philosopher Vatnam said, to really refer to a thing you need an unbroken causal connection, and that is much easier to establish when the tree in front of you is represented by an actual object in memory as opposed to being patternmatched from a bunch of atoms
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Occam's Teleogical Plea: our local truth maximum must be a global maximum, otherwise the universe would be both stupid and cruel
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but a brain in a vat would never need to shave. thus the razor is only simulated and thus inapplicable in this case. QED
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