"To try to describe a mystical experience is like trying to describe the scent of a flower; one cannot do it. The best on can do is tell the enquirer how best he can obtain the particular flower so that he can smell it for himself. If he cannot be bothered to follow your directions or flatly refuses to believe that the flower exists there is nothing one can do about it"
Think of it this way. There is the objective universe that all of us can see, hear, smell, taste and touch. It can be measured, defined by all of us the same way.
Then, there is whatever each of us can make up in our own head. The imaginary universe which is entirely subjective. Each person has their own version.
The real universe and the imaginary one.
Physics deals with the objective, measurable and definable reality while Mysticism is subjective because it deals with imaginary things.
The best way to tell which universe you are dealing with is simple.
When somebody tells you they cannot define, measure or objectify a thing they describe as ACTUAL---you are dealing with mysticism.
Subjectivity is an alarm bell for rational people.
The imaginary is a lot more interesting because it can be anything. Mostly, this is because it isn't something.
Supernatural, mystical, irrational......all words which require you give up the thinking and analytical part of your intelligence in order to participate in a fuzzy wuzzy world of make-believe.
Which world does science, technology, fact, medicine, human progress and education flow from? The real world, the objective one which is definable.
That's the one we actually live in.
The rest is about as real as the dream you had when you ate too much pastrami. (And as open to "interpretation.")