Calgary engineer believes he's cracked the mysterious Voynich Manuscript

[ReneZ]

That's a good idea for any proposed solution. Take a list of generic words: sun, moon, star, planet, soul, leaf, stem, flower, root, water, night, day, hot, cold, etc., translate them *into* Voynichese according to the proposed system, and see if they exist in the VMs text.

It's an excellent idea, the only condition would be to master the language of the 15th century.

Nothing against you, but I don't understand that condition.
Anyone proposing a solution must have some confidence in the language that they are proposing.

The challenge posted by R.Sale has been proposed many times. Use the proposed method (cipher, substitution method) to encode common words, and demonstrate that these occur in the MS.
This has never been taken up by anyone.

I argue that this is because it does not work, and it would show clearly that the proposed system does not work.
And they know it.

This is a call out to anyone with a specific solution proposal.
Take this challenge and show the strength of your theory.