Terry, no offense, but I tend to think many times (not everytime) you get "real" confused with "tangible". Something
can be real though unseen. Take Sirona's example of trying to describe the scent of a flower. We can describe
the scent in relation to another scent (it smells like vanilla mixed with apricots) or it smells sweet like candy, but
you can never capture the description with words......only metaphors or similes.
The essence of something IS real.......it's just not tangible
The topic heading gave me two choices of reply. One of which was not "tangible".
I did not distinguish real from unseen. I distinguished real from imaginary.
You are changing what I said.
The scent of a flower is tangible. Aren't you aware of what causes a scent? It is a chemical reaction caused by the interaction of molecules from the flower which are carried in the air to the sensors in the nose leading to the brain. The amount of chemical constituencies can be quantifiable (measured) because they are real.
Whenever somebody wants to disable our thinking ability they destroy our burglar alarm by subverting our vocabulary trying to convince us it isn't accurate or reliable. When it comes to measurement (the bedrock of the scientific method) is is reliable.
Now, having said that, let me proceed to burrow down to the essence of your comment.
In everyday language, conversational parlance and such, it isn't usually necessary to be precise about such things as colors and scents. But, this does not mean there is not a scientific vocabulary which is accurate and precise that can well encompass scents and colors.
The usual vocabulary of science is numbers.
You blur the distinction between ordinary conversational vocabular and scientific data AS THOUGH science were INCAPABLE of dealing with such unseen phenomena as smells.
Context is everything. A poem is not about information so much as it is about evoking subjective emotional resonances. Simile, metaphor and such are part of the aesthetics of art. That is a philosophical domain.
Why not be clear that Mysticism is a kind of ART and not a kind of science?
Mystical "things" are "real" in the sense that our responses are subjective emotional sensations which, rather than being connected to an actually existing REAL THING, are triggered by our value system (aesthetic sense) and we FEEL something often with a greater intensity than in ordinary situations. (When Bambi's mother is shot by the hunter, little kids cry their eyes out.)
Bambi is not real and the mother didn't really die. But, the sorrow of empathetic loss is real.
See the difference?
Once you buy in to a MYSTICAL context you can be emotionally manipulated to feel all sorts of REAL feelings AS THOUGH something genuinely realistic was involved.
Not seeing this is what leaves us intellectually vulnerable to manipulation and the distortion of our conclusions.