Easter Monday Mystery - The Voynich Manuscript

Professor

Well the oceans are 400 feet higher now than they were during the last ice age, and some of what was dry land long before that has slid under tectonic plates raising mountains where once there were plains.
Its entirely possible that hundreds of civilizations, not all strictly human have come and gone in ages past.
I've dug iron objects out of the ground and broken them into fragments in my hands. A friend found a gold plated Winchester commemorative rifle in a sunken fishing boat. It had spent perhaps five years in salt water at the most. The barrel crumbled and the receiver swelled up with corrosion bursting the gold plate which then peeled away. I've seen gold sheathed Iron axes found in dry tombs that were in the same condition. In other tombs iron swords were found intact It depends on the chemicals in soil among other things.
The more advanced a civilization the less likely there will be recognizable remains of artifacts or buildings after many thousands of years. Ancient Roman concrete made with lava pumice will outlast modern concrete.
The concrete containment domes of nuclear power plants have been failing in recent years. same for the concrete domes poured over contaminated soil and such from nuclear testing only 60 years ago.
Centuries of flooding may have washed away all trace of ancient cities, the remnants deposited in canyons on the ocean floors.

Entire cities have disappeared beneath desert sands in recorded history, believed to be mere myths a few of these cities have been found in modern times with satellite imagery. How much more difficult to find cities lost thousands of years before recorded history?

One thing that you might notice is that in legends of lost civilizations the appearance of Chimera of various sorts are a common thing. Often Chimera were developed as weapons of war. Genetic manipulation is more dangerous in the long run than nuclear energy.

If the Manuscript is real it may be a copy many generations removed from the original, like almost every ancient tome before the invention of acid free paper and the printing press. The Iron Gaul ink on its own destroyed most manuscripts, even those done on animal skins.

It was common for Alchemists to record everything in a personal code, an artificial language only they understood.
Without the Rosetta stone we'd still be wondering how to decipher most ancient languages.