What is the Voynich manuscript, and has anyone decoded it?
The world's most famous unreadable book has been 'solved' dozens of times - by a WWII codebreaking legend, a Bristol academic, and an AI - and every single reading has collapsed under scrutiny. Scholars still cannot agree whether it says anything at all.
5 established, 3 disputed, 4 debunked, 2 unresolved. We do not pick an answer; the evidence places each claim. How we decide
33 citations from 19 independent sources - 14 echo the same voices and count once. Graded B1-D1.
Added 3 Jul 2026
What the four states mean
- Establishedsupported, uncontested
- Disputedcredible sources disagree
- Debunkedrefuted by the evidence
- Unresolvedno settled answer
Established 5supported, uncontested
After a century of attempts - including by the best cryptanalysts alive - no decipherment has ever been accepted▰▰▰▱▱ likely2 points
Supports- Yale, which holds MS 408, states the book's language has eluded decipherment and its illustrations remain as baffling as they are beautiful.Voynich Manuscript (Beinecke Library, Yale) primary
- A century of proposed solutions - Newbold's, Feely's, Strong's and others - have each been rejected; the page notes no student accepted them as valid.History of research of the MS (voynich.nu) analysis
The book's documented trail begins only around 1600 in Prague; everything earlier - Rudolf II, Roger Bacon - rests on one 1665 letter▰▰▰▱▱ likely2 points
Supports- Earliest firmly documented owner is the Prague alchemist Georg Baresch (c. 1600); it passed to Johannes Marcus Marci, who sent it to the Jesuit polymath Athanasius Kircher.History of the MS (voynich.nu) analysis
- The story that Emperor Rudolf II paid 600 gold ducats and that the author might be Roger Bacon comes solely from Marci's 1665/66 letter to Kircher - hearsay he himself flagged as unverified.The Mysterious Contents of the Voynich Manuscript (History.com) summary
2024 multispectral imaging exposed hidden marginalia - including an early owner's failed attempt to crack the code▰▰▰▱▱ likely2 points
Supports- On folio 1r, imaging revealed three faint columns - a Roman alphabet, Voynichese characters, and a second offset alphabet - apparently an early reader's decryption key, never clearly seen before.Multispectral Imaging and the Voynich Manuscript (Manuscript Road Trip) primary
- Davis concludes the layered marginalia make a modern forgery very unlikely - but stresses none of it provides a key to actually reading the text.Voynich Manuscript scans reveal early decoding attempt (The Art Newspaper) analysis
Paleography says it was written by several different hands, not one person - undercutting the lone-hoaxer doodle theory▰▰▱▱▱ likely1 source
Supports- Medievalist Lisa Fagin Davis's 2020 study in Manuscript Studies identified five distinct scribal hands, confirming Currier's hands 1-2 and adding three more.Alumna joins the long search to unlock an enigmatic 15th-century manuscript (Yale Library) analysis
The Voynich manuscript's parchment is genuinely early-15th-century, carbon-dated to between 1404 and 1438▰▰▰▱▱ likely1 against3 points
Supports- Four vellum folios sampled at the University of Arizona AMS lab dated the animal skin to 1404-1438 with 95% probability; a combined estimate gives 1404-1435.Radio-carbon dating of the Voynich MS (voynich.nu) analysis
- Reporting on the Arizona results: the dating ruled out theories that the book was a much later forgery, placing the material firmly in the early 1400s.Experts determine age of book 'nobody can read' (Phys.org) analysis
Against- Caveat: the test dates only when the parchment was made, not when ink was applied - so it cannot by itself prove the writing is medieval.Radio-carbon dating of the Voynich MS (voynich.nu) analysis
Disputed 3credible sources disagree
A 2024 study argues it's a coded treatise on sex, conception and 'women's secrets'▰▰▰▱▱ roughly even chance1 against2 points
Supports- Brewer and Lewis note hundreds of nude female figures holding objects pointed toward their genitalia, and link the book to a medieval culture of erasing and enciphering gynaecological 'secrets' tied to physician Johannes Hartlieb.For 600 years the Voynich manuscript has remained a mystery (The Conversation, Brewer & Lewis) primary
Against- Linguists caution this is an interpretation of imagery and theme, not a decipherment - it reads zero words of the actual text, so the 'secrets' remain just as locked.Once again the Voynich manuscript (Language Log, Mark Liberman) analysis
A linguist claimed in 2014 to have 'partially decoded' about ten Voynich words▰▰▰▱▱ roughly even chance1 against2 points
Supports- Bax matched plant and star illustrations to proper names - reading words he interpreted as Taurus, juniper, coriander, hellebore and others - to provisionally assign sounds to about 14 symbols.Voynich Manuscript partially decoded, text is not a hoax (Medievalists.net) analysis
Against- Critics noted the readings are unverifiable and cherry-picked, and the method never extended into coherent sentences; Bax died in 2017 without the breakthrough being confirmed.Stephen Bax and the Voynich Manuscript (Cipher Mysteries, Nick Pelling) analysis
Statistical tests keep finding the text behaves like a real language - but that's hotly contested▰▰▰▱▱ unlikely2 against3 points
Supports- Montemurro and Zanette report the text obeys Zipf's law and shows long-range word organization compatible with real language, concluding this 'limits severely the scope of the hoax hypothesis.'Keywords and Co-Occurrence Patterns in the Voynich Manuscript (PLOS ONE 2013) primary
Against- Andreas Schinner's Cryptologia study found token and repetition statistics more consistent with a stochastic (gibberish-generating) process than with encoded Latin or German.The Voynich Manuscript: Evidence of the Hoax Hypothesis (Schinner, Cryptologia 2007) primary
- Torsten Timm shows a simple self-citation copying method - writing each word by lightly altering a nearby one - reproduces Voynichese's odd statistics without any underlying meaning.How the Voynich Manuscript was created (Timm, arXiv 2014) primary
Debunked 4refuted by the evidence
In 1921 a Penn professor claimed to read the text as Roger Bacon's microscopic shorthand revealing hidden scienceRefuted by
In 1931 John Manly demonstrated the 'micrography' was just cracks in dried ink, and that Newbold's anagram method was so flexible it could yield almost any text the reader wished.
refuted1 against2 pointsThe claim rested on- William Newbold argued each Voynich glyph hid tiny shorthand marks visible under magnification, which decoded to Latin showing Bacon had used microscopes and telescopes centuries early.The Mysterious Contents of the Voynich Manuscript (History.com) summary
Refuted by- In 1931 John Manly demonstrated the 'micrography' was just cracks in dried ink, and that Newbold's anagram method was so flexible it could yield almost any text the reader wished.History of research of the MS (voynich.nu) analysis
The popular attribution to 13th-century friar Roger Bacon is impossibleRefuted by
The parchment dates to 1404-1438, more than a century after Bacon's death (1292), so he cannot have authored it.
refuted1 against2 pointsThe claim rested on- Wilfrid Voynich and others promoted Bacon authorship on the strength of a note found with the book and Marci's secondhand 1665 report of a rumor.History of the MS (voynich.nu) analysis
Refuted by- The parchment dates to 1404-1438, more than a century after Bacon's death (1292), so he cannot have authored it.Experts determine age of book 'nobody can read' (Phys.org) analysis
In 2018 headlines declared AI had 'cracked' the Voynich and shown it was written in HebrewRefuted by
The authors themselves hedged that the result could be 'tantalizing clues' for Hebrew or merely 'artifacts of the combinatorial power of anagramming and language models.'
refuted2 against4 pointsThe claim rested on- Alberta's Hauer and Kondrak reported an algorithm was 97% confident the language was Hebrew, and using Google Translate produced a sentence they read as 'she made recommendations to the priest...'Using AI to decipher ancient manuscript (University of Alberta) primary
- Outlets nonetheless framed it as AI beating 600 years of human failure.Scientists claim to crack an elusive centuries-old code - and it's Hebrew (Times of Israel) summary
Refuted by- The authors themselves hedged that the result could be 'tantalizing clues' for Hebrew or merely 'artifacts of the combinatorial power of anagramming and language models.'Using AI to uncover the mystery of Voynich manuscript (Phys.org) analysis
- Scholars objected that the team relied on Google Translate rather than a Hebrew expert, and that the 'translation' was massaged from anagrammed letters into something only loosely grammatical.Did Artificial Intelligence Really Decode the Voynich Manuscript? Some Leading Scholars Doubt It (Artnet News) analysis
A 2019 paper announced the manuscript was finally solved as a lost 'proto-Romance' languageRefuted by
Lisa Fagin Davis: 'proto-Romance language' is not a thing - it is aspirational, circular, self-fulfilling nonsense; she found applying his substitutions yields only subjective gibberish.
refuted3 against4 pointsThe claim rested on- Cheshire claimed MS 408 is written in a 'proto-Romance' lingua franca and a unique alphabet, asserting he had identified its language and writing system - and the paper passed Romance Studies' peer review.The Language and Writing System of MS408 (Voynich) Explained (Romance Studies 2019) primary
Refuted by- Lisa Fagin Davis: 'proto-Romance language' is not a thing - it is aspirational, circular, self-fulfilling nonsense; she found applying his substitutions yields only subjective gibberish.Sorry, It Looks Like a Researcher Didn't Just Crack the Voynich Manuscript (Gizmodo) analysis
- Linguists on sci.lang called it garbage, noting words were matched at random across all Romance languages plus Latin and that no one could have 'known' reconstructed Proto-Romance in the 1400s.Voynich code cracked? (Language Log) analysis
- The University of Bristol pulled its own press release within a day, saying concerns from linguists and medievalists meant it had removed the story to seek further validation.Fake news in Romance Studies: On the 'solving' of the Voynich manuscript (academia.edu) analysis
Unresolved 2no settled answer
Whether 'Voynichese' is a cipher, an invented language, or meaningless is still genuinely open▰▰▰▱▱ likely2 points
Supports- Master cryptanalyst William Friedman, after years of failure, left a sealed anagram concluding it was 'an early attempt to construct an artificial or universal language of the a priori type' - a constructed tongue, not a cipher.The Quest To Unlock the Mysteries of a Bizarre Manuscript Known as Voynich (Tablet Magazine) analysis
- The script's character-level entropy is unusually low for a natural language, fitting neither a simple substitution cipher nor ordinary text - which is exactly why it resists every framework.History of research of the MS (voynich.nu) analysis
Who made the book, where, and why remain completely unknown▰▰▰▱▱ likely2 points
Supports- Yale describes six content sections - botanical, astronomical, biological, cosmological, pharmaceutical and a final text section - none of which has been securely matched to a known author, place, or purpose.Voynich Manuscript (Beinecke Library, Yale) primary
- Even after 2024 imaging argued for a genuine medieval origin in Central Europe, researchers concede the maker, region and intent are still undetermined and no theory commands consensus.Voynich Manuscript scans reveal early decoding attempt (The Art Newspaper) analysis
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