Masterpiece?

[ReneZ]

It would not be impressive from a trained adult.

I see several similar comments in this thread.
I cannot agree at all.

Whoever created the Voynich MS had significant skills and clear knowledge of medical / philosophical documents.

Even if the penmanship is no match for the top scribes of the mid-15th Century, it is at a level that very few people had.

Creating such an invented, yet flowing script is essentially unparalleled in pre-modern history.

The herbal illustrations and their layout show familiarity with herbal manuscripts.
The cosmological illustrations could not have been made by someone who had never seen cosmological or computus manuscripts.
The zodiac illustrations also betray familiarity with early 15th century manuscripts.

I very, very strongly doubt (but would be happy to see evidence for or against) that juveniles and students would have access to such an array of manuscripts.