Here's why:
* No known language matches: Despite extensive analysis, no one has been able to definitively link the script to any known language, ancient or modern.
* Unique alphabet: The script uses characters that are not found in any known writing system.
* Contextual ambiguity: The lack of clear semantic connections between the words and illustrations makes it difficult to decipher meaning.
While some theories have been proposed, none have been proven conclusively. The Voynich Manuscript remains one of the greatest unsolved mysteries in the world of cryptography and linguistics.