3. "There is no way we can state that two plus two equals four or that snow is whit...

"There is no way we can state that two plus two equals four or that snow is white, without being committed to objective truth." -- John Searle defends objective truth from post-postmodernism

No. Because a 'miswired' brain could translate wavelengths stimulating the optic nerve into sounds. The perception of an object is not identical to the existence of the object independent of the viewer. We have no access to the object independent of our perception and conceptualization of the wavelength. We do not know what a wavelength is independent of a human brain's organization of it into perceptual experience with reference to human epistemological systems.

We do not know what a wave is existent of itself independent of our comprehension and perception of it. For the sake of a thought problem, what if there was a radically divergent cognition in an extraterrestrial that was unable to bridge the gulf of communication because it is simply not possible for a human mind to perceive physical phenomena in the same way?

We might suppose that we could come up with a behavioristic model of the creature and then map it to various events in its physiology to see what patterns can be discerned and then come up with rudimentary predictions of response based upon what me might interpret as a form of communication.

But supposing that the alien could covey its perceptions themselves in a way that is comprehensible by us is presupposing some metaphysical information that can be reorganized and used to reconstruct a perception within our perceptions identical to the alien's without having reference to the alien's for comparison. What reason do we have to believe that objective information exists outside of our intersubjective community and subjective perceptions given we have no non-intersubjective and no non-subjective references to test it against?

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