Even though René Z likes to tut-tut Voynich speculation (and usually with good reason, it has to be said), there’s something about the maturity and cohesion of Voynichese as a system that makes me quite sure that, unlike Athena, it did not suddenly spring forth fully-grown (and, indeed, fully-armed) from its parent’s forehead. I further infer that the author probably made a major personal investment in the Voynichese system over a long period of time – and given that it has held its secrets safe for over half a millennium, perhaps the author’s likely pride in his/her accomplishment was reasonably justified. That is, perhaps just as with Trithemius’ cryptography mere decades later, the system itself was no less a secret than its contents. 😉
Moreover, the notion that the system was accreted over time might well explain much of the fluency of the script design and the assurance of the document execution (though this much has been noted many times before). In “The Curse of the Voynich“, I made various attempts to turn the clock back to the pre-history of Voynichese, i.e. to use the letter-shapes themselves as a basis for speculating how they evolved and ended up in their final form. Of course, without Marty McFly’s Delorean (or Tom Riddle’s diary, for that matter), tempus will always fugit leaving historians clutching at long-blown-away straws: but perhaps there are some clues here that can help us peer through the fog of time…
My starting point here is that I believe the conceptual roots of the Voynichese cipher system lie not in tricksy Renaissance stateful ciphers, but in far simpler stateless ciphers and steganography, all of which were standard fare for the Quattrocento. Hence, I predict that the “ar” / “al” / “or” / “ol” 2×2 grid of verbose pairs (which I discussed in yesterday’s post) was part of an earlier (much simpler) verbose cipher that was designed to disguise the kind of repeated letters found in Roman numerals (i.e. III / XXX / CCC / MMM): and that what we see now evolved out of that earlier stateless system. It is certainly possible that the looped “l” character was originally designed to steganographically hide an “x”:-
However, this wouldn’t be much of an improvement, so you’d then need to add in hacks such as space insertion ciphers to disguise the verbose patterns: and you’d perhaps then need to add yet another system to handle small numbers (such as the a[i][i][i]r system shown above). And then you’d perhaps need to add in a second (Arabic number, aiiiv?) system… but that’s another story. All in all, this is the kind of cipher evolution I’m talking about: and what makes it speculative is that we only have the end-result of the evolution.
Now… what I’m actually wondering about at the moment is whether anyone has looked through examples of 15th century ciphertexts and cipher ledgers to see if there are any examples of people constructing verbose-pair cipherbets specifically to allow themselves to hide Roman numerals in enciphered texts. While the precise details of the execution may well be quite different, it could be that if we can find examples of the idea in action, we might be able to start tracing some kind of additional behind-the-scenes intellectual history vector for it – where it came from, what kind of person used it, who those people were connected to, etc. I have a few ideas for how to do this, which I’ll (hopefully) try out soon, see if they lead anywhere…


