The 15th Century Voynich manuscript has
been described as the world's most mysterious book, which could be a
complex code, an unknown language or simply a hoax
The
message inside "the world's most mysterious medieval manuscript" has
eluded cryptographers, mathematicians and linguists for over a century.
And for many, the so-called Voynich book is assumed to be a hoax.But a new study, published in the journal Plos One, suggests the manuscript may, after all, hold a genuine message.
Scientists say they found linguistic patterns they believe to be meaningful words within the text.
Whether or not it really does have any meaningful information, though, is much debated by amateurs and professionals alike.
It was even investigated by a team of prominent code breakers during WWII who successfully cracked complex encrypted enemy messages, but they failed to find meaning in the text.
The book has been dated to the early 1400s, but it largely disappeared from public record until 1912 when an antique book dealer called Wilfrid Voynich bought it amongst a number of second-hand publications in Italy.
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The book is 240 pages long, is written in
an unknown alphabet and features mysterious pictures of unknown plants,
astronomical images and naked women bathing
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Marcelo Montemurro, a theoretical
physicist from the University of Manchester, UK, has spent many years
analysing its linguistic patterns and says he hopes to unravel the
manuscript's mystery, which he believes his new research is one step
closer to doing.
"The text is unique, there are no similar works and all
attempts to decode any possible message in the text have failed. It's
not easy to dismiss the manuscript as simple nonsensical gibberish, as
it shows a significant [linguistic] structure," he told BBC News.
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"There are about 25 examinations of the Voynich manuscript and
most of the results show the text has similarities with natural
language. This new examination is one more of this kind," says Klaus
Schmeh, a cryptographer.
"While we know a lot about the statistical properties of the text, we don't know enough about how to interpret them, which is one of the problems with the new research. We need to find out how different languages, encryption methods, and text types influence the statistics.
"There have been numerous encrypted texts since the Middle Ages and 99.9% have been cracked. If you have a whole book, as here, it should be 'quite easy' as there is so much material for analysts to work with. That it has never been decrypted is a strong argument for the hoax theory."
100 years of analysis
"While we know a lot about the statistical properties of the text, we don't know enough about how to interpret them, which is one of the problems with the new research. We need to find out how different languages, encryption methods, and text types influence the statistics.
"There have been numerous encrypted texts since the Middle Ages and 99.9% have been cracked. If you have a whole book, as here, it should be 'quite easy' as there is so much material for analysts to work with. That it has never been decrypted is a strong argument for the hoax theory."
Dr Montemurro and a colleague
used a computerised statistical method to analyse the text, an approach
that has been known to work on other languages.
They focused on patterns of how the words were arranged in order to extract meaningful content-bearing words."There is substantial evidence that content-bearing words tend to occur in a clustered pattern, where they are required as part of the specific information being written," he explains.
"Over long spans of texts, words leave a statistical signature about their use. When the topic shifts, other words are needed.
"The semantic networks we obtained clearly show that related words tend to share structure similarities. This also happens to a certain degree in real languages."
Dr Montemurro believes it unlikely that these features were simply "incorporated" into the text to make a hoax more realistic, as most of the required academic knowledge of these structures did not exist at the time the Voynich manuscript was created.
Though he has found a pattern, what the words mean remains a mystery. The very fact that a century of brilliant minds have analysed the work with little progress means some believe a hoax is the only likely explanation.
Unidentified language Gordon Rugg, a mathematician from Keele University, UK, is one such academic. He has even produced his own complex code deliberately similar to "Voynichese" to show how a text can appear to have meaningful patterns, even though it is "gibberish hoax text".
He says the new findings do not rule out the hoax theory, which the researchers argue.
"The findings aren't anything new. It's been accepted for decades that the statistical properties of Voynichese are similar, but not identical, to those of real languages.
"I don't think there's much chance that the Voynich manuscript is simply an unidentified language, because there are too many features in its text that are very different from anything found in any real language."
Dr Rugg made a code purposely similar to the Voynich text to show how easy it was to produce
As to its enduring appeal, an unsolved cipher could be "hiding almost anything", says Craig Bauer, author of Secret History: The Story of Cryptology.
"It could solve a major crime, reveal buried treasure worth millions or in the case of the Voynich manuscript, rewrite the history of science," he adds.
Dr Bauer's opinion of whether it is meaningful is often swayed, he admits. While he recently believed it to be a hoax, the new analysis has now shifted his opinion.
But despite this, he still believes it is a made up language, as opposed to a real naturally evolving one, or "it would have been broken years ago".
"However, I still feel that it's very much an open question and I may change my mind a few times before a proof is obtained one way or the other."
But Dr Montemurro is firm in his belief, and argues that the hoax hypothesis cannot possibly explain the semantic patterns he has discovered.
He is aware that his analysis leaves many questions still unanswered, such as whether it is an encoded version of a known language or whether a totally invented language.
"After this study, any new support for the hoax hypothesis should address the emergence of this sophisticated structure explicitly. So far, this has not been done.
"There must be a story behind it, which we may never know," Dr Montemurro adds
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