[split] Does Voynichese evolve from A to B?

[Jorge_Stolfi]

Also why propose such a large spelling reform

See my reply to @npcompl33t above.  The main motivations for a spelling reform are making the language more phonetic or logical, and, "since we are at it", easier to write. 

[a large spelling reform] never happened in any manuscript written in a single language (unless it has several parts that were written centuries apart)

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He could not possibly notice it, but the word, digraph, and character frequencies of these two texts are completely different, like those of Italian compared to those of German.  So this would be a "large enough" change that could be evidence of gbberish.

This type of maximalist demands look like you absolutely want to win an argument by being maximally unreasonable.

Sorry, I don't understand this comment.

The claim "he could not possibly notice it" is misleading. Sure some variations in statistics would be inconspicuous and some statistics could be off by a lot (exactly what we are seeing in the VMS btw) but just taking a glance at a page is enough to see some differences in frequencies when they are glaringly obvious: I don't know any Italian but I can see at a glance that a page is not German and probably Italian.

The difference between "language A" and "language B" in the VMS was noticed only in the 1970s, when Currier computed the right statistics. 

If you can read a text, you will immediately notice even tiny changes in spelling, like color/colour.  But if you cannot read a single word -- as in the case of the VMS, of the two samples in my post, and of the output or any proposed giberish generator -- you will not notice shifts in digraph frequency, not even between Italian and German.  Unless you deliberately look for them,or have them pointed out.  Did you notice the statistical differences between those two samples of mine?

Someone who had little exposure to written Japanese, Chinese, and Korean may not even notice the difference between them.  

Can you see the statistical differences between the two texts below? They are in different languages.  Can you tell which one is in Arabic?
       
(Actually neither is in Arabic. The first one is Turkish, the other is in Farsi (or is it the other way around?) The two languages are far more different than Italian and German...)

I just assume that English is badly spelled French.

And you would be maybe only 50% wrong...