Why Voynichese doesn't have cribs?

[Rafal]

I'm not sure I use the proper terminology, but for me "many to many" implies that you cannot reconstruct a unique plaintext, there will always be uncertainty

I am not sure about the terminology too. "Many to many" was my invention on the fly. The proper name is polyalphabetic cipher: You are not allowed to view links. Register or Login to view.

See this example:
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attacking tonight
ovnlqbpvt hznzeuz

I meant that
- "t" from plain text may become "v" but also "n" in the ciphertext
- "z" in the ciphertext may mean "t" but also "i" in the plain text

Actually in Vigenere any letter may mean any another letter.