[split] Did the VM go straight from cerebellum to vellum?

[ReneZ]

How do we collect a representative sample of manuscripts written on poor quality parchment?

I think that the problem is more generic even.

Just how poor-quality is the parchment of the Voynich MS? 
Sure, it cannot compare with the top-of-the-range books of hours, but is it unusually low-quality or even exceptionally low-quality? I am not aware that it is either, but I also don't know.
It may just be run-of-the-mill stuff. Nothing exceptionally bad.

I like to compare this with modern cars. 
All cars are cheap when compared to a buyer-customised Bugatti, but not all of these cheaper cars are cheap in a more absolute sense. Is the parchment of the Voynich MS comparable to a second-hand 2CV running on leaded fuel?