The Impossibility of Double Gallows
Emma May Smith > 16-01-2016, 10:09 PM
I've been playing around with some bigram tables lately, and though I haven't yet seen anything shockingly new, there is something reassuringly old which keeps pressing me to explain. Namely, that no two gallows characters can appear next to one another in the text. It likely seems as though such an obvious fact needs no explanation, but I feel it does.
By gallows characters I mean [k, t, f, p] and their bench versions [ckh, cth, cfh, cph]. Despite the 8x8 possible combinations for such characters, they basically do not exist in pairs. There are, as far as I can find, six exceptions in the whole text. Not six combinations, but six, individual, once occurring combinations of any two gallows characters.
Why is this important and why does it need explaining? Firstly, it is important because the way characters fit together should belie the linguistic facts underlying the text (assuming the text is linguistic, naturally). Next, because the statistics for gallows combinations are so stark, there being next to none.
Most combinations of characters appear a few times even if they do not normally go together. So [ak], a combination which should not ideally exist, gets about 40 hits; [oq] gets 20; [lm] gets about 10; and [en] 15. At these levels the stats are basically noise. They are likely no more than writing and reading errors, or missplit words. Even if they encode something genuine it cannot be a main part of the underlying language.
Yet, even with the possibility of errors, two gallows characters do not occur next to one another. Why? Well, here's my guess and what it means.
1) The gallows characters are distinct in essential form from all other characters. Many characters begin with a small round or straight stroke (such as what Cham's stroke theory is based on) and can be easily confused: [ei] for [a], [ch] for [ee], [r] for [s], among others. But gallows characters all begin with a long straight stroke above the line which only they use. Although the writer may have mistakenly written one gallows character when he meant another—and a reader likewise—they can only ever be confused for each other and never a non-gallows character.
2) Although gallows often come at the beginning of words they almost never come at the end. Even when a space between two words is ambiguous, the joining of two neighbouring words will not bring together two gallows. The reader cannot misread their way to double gallows.
3) The gallows all take the same place within the structure of a word. One loop or two, one leg or two, bench or no bench, no variation in their shape causes them to take a different place or makes it possible for them to occur together.
4) The structure of words is strict and variations simply don't occur all that often. This is a point made by researchers a long time ago but bears repeating. Characters fall into classes according to their distribution and role within words. They don't move about and do different things (I can only think of one possible exception to this). This is something fundamental to what they represent.
5) All the gallows must thus share some feature which puts them into the same class and makes them work in similar ways.
6) Their similar role and their similar appearance suggests that whomever invented the Voynich script did so with a clear understanding of not only how the underlying language worked, but also how languages in general work. The gallows itself as a character category is also a linguistic category.
7) Further, it is most likely a phonological category, which would explain why two sounds cannot appear together and why they must appear in certain places within words. Given the constraints on possible 'sound sets' within any language, and the number of distinct characters, the gallows as a feature can only represent a handful of phonological features.