Historic cipher mapping

[Mark Knowles]

When it comes to compiling ciphers from the early 15th century there are a few perspectives it seems to me:

1) The Voynich is not written in cipher and therefore a knowledge of ciphers of the time is irrelevant
2) The Voynich is written in cipher, but it has no relationship to ciphers used or invented at the time therefore knowledge of ciphers of the time is irrelevant
3) The Voynich is written in cipher and is related to ciphers used or invented at the time therefore compiling ciphers of the time can give insights into the Voynich cipher