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  • Our perceptions are fallible. We sometimes see what isn't there. We are prey to optical illusions. Occasionally we hallucinate. We are error-prone.

    Carl Sagan
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    Carl Sagan (2011). “Demon-Haunted World: Science as a Candle in the Dark”, p.43, Ballantine Books
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Our perceptions are fallible. We sometimes see what isn't there. We are prey to optical illusions. Occasionally we hallucinate. We are error-prone. - Carl Sagan
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