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the-voynich-manuscript-is-the-worlds-most

The Voynich Manuscript is the world’s most secretive book. It’s dated to the 15th century and contains an unknown writing system that even renowned cryptographers have never deciphered. Illustrations in the book suggest it may cover topics like herbal remedies, biology, astronomy, and the zodiac, but no one knows for sure what it is, what it means, or whether it’s a hoax. Source Source 2 Source 3