I hack, you hack, he/she hacks, we hack, they hack – whether you’re tying something to your key-ring with string, or trying “Username=admin / Password=admin“, you’re officially a hacker. Furthermore, says well-known YCombinator startup guy Paul Graham, the word “hack”…

…can be either a compliment or an insult. It’s called a hack when you do something in an ugly way. But when you do something so clever that you somehow beat the system, that’s also called a hack. The word is used more often in the former than the latter sense, probably because ugly solutions are more common than brilliant ones.

Believe it or not, the two senses of “hack” are also connected. Ugly and imaginative solutions have something in common: they both break the rules. And there is a gradual continuum between rule breaking that’s merely ugly (using duct tape to attach something to your bike) and rule breaking that is brilliantly imaginative (discarding Euclidean space).

An ugly-to-beautiful rule-breaking continuum, eh? Further on in the post, Graham muses about what was wrong with living in Florence…

But after I’d been there a few months I realized that what I’d been unconsciously hoping to find there was back in the place I’d just left. The reason Florence is famous is that in 1450, it was New York. In 1450 it was filled with the kind of turbulent and ambitious people you find now in America. (So I went back to America.)

Put all these pieces together, and do you grasp what Graham is feeling his way towards? That the Renaissance started with wave after wave of Florentine hardware hackers (Brunelleschi et al) and software hackers (Alberti et al), using their restless ingenuity to bypass & sidestep the rigid rules and conventions holding wobbly medieval practices & thought in place. But, irritatingly, this was not done under an elegantly humanist banner: no, this was a grass-roots, geeky, reality-hacking startup crew (let’s call them ‘Generation R‘, for want of a better name), all vying for Series A-style funding from the Venture Capitalists of the day (Medici, Sforza, Rucellai, Malatesta, etc), where the ‘exit strategy’ on their proposals wasn’t an IPO, but something much greater: fama – eternal individual fame.

It’s true that it’s a looong time since Burckhardt’s progressivist ra-ra-Renaissance-in-Florence line has been the dominant historical narrative for the Quattrocento; and yes, the Middle Ages also saw plenty of invention (see Jean Gimpel’s “The Medieval Machine” if you don’t believe me); but all the same, I suspect there would be more than a Tower grain of truth in the idea that the history of hacking can indeed be traced back through time right to Generation R’s door. Even if you don’t buy in to the rest of the simile. 😉

Putting our cipher mystery hat back on, does this mean that our favourite early modern cipher object – the Voynich Manuscript, of course – might merely be the ultimate software hack of its era? If so, is it an ugly (yellow duckling) hack of temporary convenience and cunning, or a beautiful (black swan) hack born of unique happenstance and intellect? Or might it instead sit somewhere in the foggy continuum between these two poles? Something to bear in mind, anyway…

Right at the start of (1970) “Brunelleschi: Studies of His Technology and Inventions” (pp. xi-xiii), Frank Prager summarizes Gustina Scaglia’s research into how Brunelleschi’s ideas for machines spread. They posit a key missing manuscript (dubbed “The Machinery Complex“): but their discussion is fairly specialised, and so it is quite tricky to follow. Here’s my attempt at representing the argument – green boxes represent manuscripts that still exist, red boxes represent lost works, while blue boxes I’m not sure about:-

machinery-complex

Which is to say: while all the early Renaissance machine ideas ultimately stemmed from Brunelleschi, later machine authors (such as Francesco di Giorgio) relied not just on Taccola’s De Ingeneis but also on the missing “Machinery Complex” manuscript. However, nobody knows who wrote this or what subsequently happened to it – we can perceive it only by its shadow, hear it only by its echo in other manuscript and copyworks.

I think the reason that Prager & Scaglia’s text is a little confused is that, because the Machinery Complex ms has disappeared, they can’t quite make up their minds how much it influenced subsequent writers on machines such as Bartolomeo Neroni, Antonio da San Gallo, Oreste Biringuccio, and Pietro Cataneo. It’s an open question.

But here’s where it becomes a cipher history issue. As I mentioned here a few days ago, the text around what Prager and Scaglia call “the secret hoist” is written in an simple substitution cipher (one letter back in the alphabet) – but because this would have been seen as a childishly simple cipher by 1450, I infer that this ciphertext was not only present in Lorenzo Ghiberti’s original (but now lost) Zibaldone, but also that he probably wrote it in the 1430s or, at a push, the 1440s.

There’s also a cipher / codicological element to this argument, based on the observation that the pages containing the secret hoist are separated by several pages in the later copy of the Zibaldone (by Lorenzo Ghiberti’s grandson Buonaccorso Ghiberti). My suggestion is that Buonaccorso received the folios out of order, but copied them in precisely the same order – had he deciphered the two “secret hoist” pages and grasped that they were referring to the same thing, my guess is that he would have put them back into their correct order.

All in all, then, my inference here is that the simple cipher on the secret hoist was in place in Lorenzo Ghiberti’s original Zibaldone, and that even though Ghiberti himself died in 1455, we can probably date his missing Zibaldone to around the 1430s purely from the simplistic cipher used in it. (Of course, scientists hate this kind of art history “probabilistic proof”, but that’s how history works.)

So far, so marginal: but here’s my “aha” moment of the day, that propels all this into a different league.

One of the things I flagged in my book “The Curse of the Voynich” (pp.141-142) was that Antonio Averlino (Filarete) may have based his (now-lost) book of Engines (“when the time comes, I will mention all these engines“, etc) on this (also now-lost) Machinery Complex – and that some of these engines may well be visually enciphered in the Voynich Manuscript’s Herbal-B pages.

However, on further reflection, it seems I really didn’t go far enough: because Antonio Averlino almost certainly started his career in Lorenzo Ghiberti’s workshops, before suddenly leaving Florence in 1433 for Rome. If we were looking for someone to carry Brunelleschi’s ideas (via Ghiberti’s Zibaldone, probably written in the 1430s) into the world, we could surely do no better than look to Antonio Averlino – I strongly suspect that he was the intermediary.

So, the question then becomes: was Antonio Averlino the author of the Machinery Complex? I strongly suspect that he was, and that the Machinery Complex will turn out to be a synthesis and development of Ghiberti’s ideas as seen from Averlino’s edgy and ambitious perspective – that is to say, that the Machinery Complex will turn out to be Averlino’s missing book of Engines. And if it also turns out (as I suspect it will) to be the case that this Machinery Complex lies visually enciphered in the Voynich Manuscript’s Herbal-B pages, what an extraordinary story that would be…

PS: as a footnote for further study, the only other paper I have found on the Machinery Complex was on The Art of Invention bibliography webpage: Gustina Scaglia’s (1988) “Drawings of forts and engines by Lorenzo Donati, Giovanbattista Alberti, Sallustio Peruzzi, The Machine Complex Artist, and Oreste Biringuccio“, Architectura, II, pp. 169-97. Definitely a paper to go through to see what conclusions Scaglia had reached about this intriguing missing document. But please let me know if you find any other references!

In a comment to a recent post on Alberti & Averlino, ‘infinitii’ asks what my recommendations would be for a Voynich Manuscript reading list… a deceptively hard question.

Apart from the direct literature on the subject (Mary D’Imperio’s “An Elegant Enigma”, my “The Curse of the Voynich”, and perhaps even Kennedy & Churchill’s “The Voynich Manuscript”), probably the best first step would always be to buy yourself a copy of “Le Code Voynich” – not for its prolix French introduction *sigh*, but simply so that you can look at the VMs’ pages in colour. The best guide to the manuscript still remains the evidence of your own eyes. 🙂

All of which is the easy, lazy blogger answer: but the kind of proper answer infinitii alludes to would be much, much harder. I should declare here that the VMs’ life in Bohemia (and beyond) strikes me as merely a footnote to the main story (though admittedly one that has been interminably expanded, mainly for lack of proper research focus).. Given that I’m convinced (a) 1450 is pretty close, date-wise; (b) Northern Italy is pretty close, location-wise; and (c) it’s almost certainly some kind of enciphered book of secrets, then the main subject we should be reading up on is simply Quattrocento books of secrets.

Doubtless there are three or four literature trees on this that I’m completely unaware of (please tell me!): but as a high level starting point, I’d recommend Part One (the first 90 pages, though really only the last few touch on the 15th century) of William Eamon’s “Science and the Secrets of Nature” (1994). Unfortunately for us, Eamon’s main interest is in Renaissance printed books of secrets. “In Nature’s infinite book of secrecy a little I can read” (Shakespeare, Antony and Cleopatra), indeed. 🙂

From there, you’ll probably have to drill down (as I did) to individual studies of single books. Virtually everything written by Prager and Scaglia fits this bill, such as  their “Brunelleschi: Studies of His Technology and Inventions” (1970) and “Mariano Taccola and His Book De Ingeneis” (1972). I recently blogged about Battisti and Battisti’s splendid “Le Macchine Cifrate di Giovanni Fontana” (1984), and that is also definitely one to look at (though being able to read Italian tolerably well would be a distinct help there). I’ve also read articles by Patrizia Catellani on Caterina Sforza’s “Gli Experimenti” (which has a smattering of cipher in its recipes), and read up on the possible origins of Isabella Cortese’s supposed “I Secreti” (which is about as late as I’ve gone). Beyond that, you’re pretty much on your own (sorry).

As general background for what secrets such books might contain, I can yet again (though I know that infinitii will groan) only really point to Lynn Thorndike’s sprawling (but wonderful) “History of Magic & Experimental Science” (particularly Volumes III and IV on the 14th and 15th century), and his little-read “Science and Thought in the XVth Century”. Thorndike’s epic books stand proud in the middle of a largely desolate research plain, somewhat like Kubrick’s black monoliths: if anything else comes close to them, I don’t know of it.

As far as Quattrocento cryptography goes, David Kahn’s “The Codebreakers” is (despite its size) no more than an apéritif to a book that has yet to be written. I found Paolo Preto’s “I Servizi Segreti” very helpful, though limited in scope. For Leon Battista Alberti’s cryptography, Augusto Buonafalce’s exemplary modern translation of “De Cifris” is absolutely essential.

What is missing? There are a few relevant books I’ve been meaning to source but haven’t yet got round to, most notably the century-old (but possibly never surpassed) “Bibliographical Notes on Histories of Inventions & Books of Secrets” by John Ferguson. You can buy an updated version with an index and a preface by William Eamon, for example from here.

In many ways the above is no more than a very personal selection of books, and one obviously based around my own particular research programme / priorities. Yet even though I have tried to cover the ground reasonably well over the last few years, there are doubtless large clusters of (for example Italian-language) papers, books and particularly dissertations I am completely unaware of.

It should be clear that I think the basic research challenge here is to build up a properly modern bibliography of Quattrocento books of secrets, and thereby to map out the larger literature field within which the whole idea of ‘the VMs as an enciphered book of secrets’ can be properly placed. Perhaps I should use this as a test case for open source history?