27-04-2023, 12:18 PM
Assuming the Voynich was written in cipher and assuming that you knew precisely what kind of cipher it was and presuming you knew the underlying language that it was written in then I am wondering how one might go about deciphering the manuscript. Obviously to some significant extent this will depend on what kind of cipher it is. When I talked about "kind of cipher" I mean of course the class or type of cipher. I don't mean that you know the exact implementation of the cipher. For example, if you knew it was a very simple substitution cipher then you might not know the precise letter substitutions.
There seem to be some general problems irrespective of type of cipher. We seem to have no crib or at least no crib that we can be confident in and we don't seem to have many clues as to how we might identify part of sentence or other clues that we can use to break the cipher open, although I could be wrong about that.
My question comes from the fact that I have learnt from some diplomatic ciphers that even when you know the precise nature of the cipher it can still be hard work to break the cipher. This comes from things like the sheer number of distinct substitutions, so every specific substitution needs to be worked out. It comes from the situation that when dealing with substitutions for people or places only knowing the historical, political and geographic context will help you work that out.
The Voynich is different from a diplomatic letter as you are unlikely to have many political substitutions, so you would have to look for completely different kinds of substitutions. The Voynich won't have the standard linguistic phraseology that can be found in diplomatic correspondence that decipherers of diplomatic ciphers are familiar with and can spot to help in the decipherment.
To reiterate I think even if one knows the type of cipher one is dealing with it could still be very very difficult to decipher.
The thing that occurs to me would be some kind of stochastic descent computational search of the solution space to explore the many different combinations.
I don't know how to tackle such a problem and I would be curious as to what others think.
There seem to be some general problems irrespective of type of cipher. We seem to have no crib or at least no crib that we can be confident in and we don't seem to have many clues as to how we might identify part of sentence or other clues that we can use to break the cipher open, although I could be wrong about that.
My question comes from the fact that I have learnt from some diplomatic ciphers that even when you know the precise nature of the cipher it can still be hard work to break the cipher. This comes from things like the sheer number of distinct substitutions, so every specific substitution needs to be worked out. It comes from the situation that when dealing with substitutions for people or places only knowing the historical, political and geographic context will help you work that out.
The Voynich is different from a diplomatic letter as you are unlikely to have many political substitutions, so you would have to look for completely different kinds of substitutions. The Voynich won't have the standard linguistic phraseology that can be found in diplomatic correspondence that decipherers of diplomatic ciphers are familiar with and can spot to help in the decipherment.
To reiterate I think even if one knows the type of cipher one is dealing with it could still be very very difficult to decipher.
The thing that occurs to me would be some kind of stochastic descent computational search of the solution space to explore the many different combinations.
I don't know how to tackle such a problem and I would be curious as to what others think.