A hypothesis on why/how the VMS was made

[Rafal]

Yes, I was referring to the type of artificial languages you mentioned. The fact is that they were not intended for communication in general, but rather for writing specific texts.

But I don't know which name would be better - an artificial language or a philosophical language?

I have some (maybe not so big) experience with conlangs due to my involvment with Rohonc Codex.

I would say constructed language is the broadest concept. Philosophical languages are a subset of constructed languages.

Philosophical languages usually assume that words and names reflect some real life hierarchy of objects.
So for example all colours will have similar names differing only with a single letter. Or names of animals will indicate if it is a mammal, bird or fish.

From Wikipedia:
A philosophical language is any constructed language that is constructed from first principles, sometimes following a classification (...)
In most philosophical languages, words are constructed from a limited set of morphemes that are treated as "elemental" or "fundamental".

Word examples for Ro language ( You are not allowed to view links. Register or Login to view. )

You are not allowed to view links. Register or Login to view.–earth
You are not allowed to view links. Register or Login to view.–ocean
You are not allowed to view links. Register or Login to view.–sea
You are not allowed to view links. Register or Login to view.–gulf
You are not allowed to view links. Register or Login to view.–land
You are not allowed to view links. Register or Login to view.–continent
You are not allowed to view links. Register or Login to view.–island
You are not allowed to view links. Register or Login to view.–peninsula
You are not allowed to view links. Register or Login to view.–isthmus
You are not allowed to view links. Register or Login to view.–plain
You are not allowed to view links. Register or Login to view.–prairie
You are not allowed to view links. Register or Login to view.–swamp
You are not allowed to view links. Register or Login to view.–hill
You are not allowed to view links. Register or Login to view.–ridge
You are not allowed to view links. Register or Login to view.–valley
You are not allowed to view links. Register or Login to view.–canyon
You are not allowed to view links. Register or Login to view.–channel

So "philosophical language" doesn't mean "not supposed to be spoken" but a bit different thing.