The Voynich manuscript, a 15th-century codex shrouded in mystery for centuries, may have been misbound, according to new research that could reshape scholarly understanding of its purpose and structure. The manuscript, known for its undeciphered script, botanical illustrations, astronomical diagrams, and images of nude women, has long defied attempts to classify it, attracting theories ranging from a lost language or musical score to an elaborate hoax.

In a study published in the journal Digital Medievalist, researchers Colin Layfield and Lisa Fagin Davis propose that the manuscript’s pages, which are folded sheets called "singulions," were originally bound in a stacked arrangement akin to a pile of Christmas cards, rather than the nested binding common to medieval books. This mistake in binding, they argue, disrupted the intended reading order and contributed to the enduring difficulty in decoding the text and images.

Using numerical analysis tools to compare text blocks, Layfield and Davis found that many pages, despite being separated in the current binding, show strong textual coherence, suggesting that the manuscript’s pages are out of sequence. Visual evidence also supports this theory: some illustrations—such as depictions of streams or pipes—do not fully align across facing pages in the current arrangement but would connect more logically if the pages were reordered.

“We’re likely dealing with a communal object—a set of booklets passed down through generations—rather than the work of a single individual,” said Davis, an expert in medieval handwriting. This challenges earlier assumptions that the manuscript was created by a lone “mad genius” working in isolation.

The manuscript’s provenance remains obscure. Though it appeared in European book collectors' records in the 17th century and was purchased in 1912 by Wilfrid Voynich, a Polish revolutionary and antiquarian book dealer, its origins have been debated. Earlier theories crediting figures such as Roger Bacon or Leonardo da Vinci have been largely discounted following carbon dating of the parchment, which dates to between 1404 and 1438.

While some scholars have proposed the text is meaningless gibberish designed to deceive, recent linguistic studies suggest it may represent a natural, though unidentified, language. The new binding hypothesis does not resolve the script’s meaning but opens the door to fresh interpretations of the manuscript’s function.

The manuscript includes illustrations reminiscent of female reproductive anatomy, alongside hints of herbal knowledge and astrological symbolism, which Davis describes as suggestive of a compendium of women's folk knowledge. However, she cautions that this interpretation remains speculative.

The researchers also noted that the Voynichese script may have been used in other medieval documents yet to be identified, leaving open the possibility that the manuscript’s enigmatic language is part of a broader, still-undiscovered corpus.