Maria Popova at The Marginalian:
“If the doors of perception were cleansed,” William Blake wrote, “everything would appear to man as it is, infinite.” But we are finite creatures, in time and in space, and there is a limit to how much reality we can bear — evolution gave us consciousness so that we may sieve the salient from the infinite, equipped it with attention so that we may narrow the aperture of perception to take in only what is relevant to us from the immense vista of now. The astonishing thing is that even though we all have more or less the same perceptual apparatus, you and I can walk the same city block together and perceive entirely different pictures of reality, because what is salient to each of us is singular to each particular consciousness — a function of who we are and what we want, of the sum total of reference points that is our lived experience, beyond the locus of which we cannot reach. (This is what makes the Mary’s Room thought experiment so compelling and unnerving, and why the best we can do to understand each other is not explanation but translation.)
Perception, then, is not a door but a mirror, not an automated computation of raw input data but a creative act that marshals all that we are and reflects us back to ourselves. Perhaps the most disorienting aspect of being alive together is that none of us will ever know what another perceives.
more here.
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