[split] Does Voynichese evolve from A to B?

[pfeaster]

of the two systems, the one we now seem to understand well enough to draw informed conclusions about did evidently evolve over the course of its writing. So we have one case that we have reason to believe evolved, and another case that shows variation of undetermined cause.

I am genuinely confused.  Which book is which?  

If you mean that the VMS "did evidently evolve over the course of its writing", I most emphatically disagree.  Even because we do not know the order in which the sections were written, nor the order of the pages within each section.  Or is that phrase referring to the RC?

Yes, I meant this the other way around.  It's the VMs that I'm identifying with variation of undetermined cause.