Character entropy of Voynichese

[Koen G]

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with on position 75 and 76 the Voynich ms.

That's interesting to play around with. My first impulse was to sort descending by length, and obviously the VM is several orders of magnitude longer than most of them. There's only one that comes even close, the Copiale cipher which is an 18th century manuscript describing a secret society's rituals. The critical point here is that this is three centuries more recent than the VM.

The VM also has by far the lowest "multiplicity". "Lower multiplicity values indicate higher numbers of constraints on substitution ciphers, making them easier to solve." So by this logic, if the VM was a simple substitution cipher, it should be super easy to solve.