[split] Could the manuscript be a copy of older documents?

[davidjackson]

Anton, one suggestion which has floated up from the Voynich cauldron in the past is that the book is a compilation of ancient sources that were believed to be unique.
For example, retrieved ancient works from Arabic sources via Al-Andalus or similar transmission method. This would explain the need to encipher the retrieved text - to keep it secret in Europe.
All supposition, of course. Although it would explain both Koen's ancient theory and my own observations on medieval art influences.