Why is there no more Voynichese in any other manuscript?

[LisaFaginDavis]

1) not EVERY surviving manuscript in the entire world has been digitized for us to examine, much less catalogued to be findable in a database, so we can't say FOR SURE that no other examples exist. Only that they haven't been found.

2) only about 5-10% of all manuscripts produced in the Middle Ages have survived to the present day. So there MIGHT have been other examples, they just haven't survived.

3) In a soon-to-be-published article, Colin Layfield and I argue that the manuscript was likely not meant to be bound at all but was a loosely-stacked pile of unnested bifolia. If it hadn't been (mis)bound between wooden boards later in the fifteenth century, it would likely not have survived at all.

We have no way of knowing what we haven't seen or what doesn't survive. I think it's LIKELY that the Voynich is unique, but we just can't say for sure. There are other manuscripts that are just as unique in text, writing system, or artistry.