A lot of us would disagree with your position that literature, movies, painting, etc do not involve disclosure about the world … and with your contention that every artistic opinion (or work of art) has the same validity or significance.
I never said or implied the last part. If you find a piece of art pretty or moving then it will have a certain “value” to you. But again, that is a subjective evaluation. As the old saying goes: “Wagner’s music is actually much better than it sounds”. It is all in the mind. Some people create pieces of “art”, by affixing non-connected urinals to a wall. In my eyes it is junk. In someone else’s mind it may be a wonderful piece of art. Who is right? Both of us? Neither one of us? Does the question “is that exhibition artistic?” make even any sense? I don’t think so. Art is a means to induce certain brain processes - especially music. Our brains are very different, and the same music may affect one person and not affect another one. Art needs no “epistemology”.
But I am really wondering where you disagree with the logical positivists.
You seem to insist on a laboratory-oriented verification principle that is universally applicable to all areas of knowledge and you seem to share their understanding of logic and, I presume, mathematics (as purely formal axiomatic systems).
Emphasis mine and it is the pertinent part of your question. The old - now defunct - logical positivism stated that there is only one way to obtain knowledge: the empirical way. That concept would be self-refuting, since its veracity cannot be established empirically. I don’t even know if there are logical positivists today.
What I say is different. First, we make zillions of observations about the physical reality - which have been conducted during the ages. Then we distill what we observed and set up a few (as few as possible) basic principles, which are considered self-evident and do not need to be verified. However, we stay alert on our toes, and if these basic principles turn out to be incorrect, then we must be ready to discard and / or modify them.
Now, when the proposition is about the
physical reality, then the only way to ascertain its veracity is the empirical way. To be precise: 1) make observations, 2) set up a tentative hypothesis, 3) try to make a prediction based upon your hypothesis, 4) conduct experiments, 5) compare the actual results with the prediction. If the prediction was accurate then the hypothesis gains credibility. If the result differes from the prediction, then the hypothesis needs to be modified or discarded. To state it simply: we use the scientific method. Before anyone jumps in, the method is not part of the physical reality, it is about the abstraction of physical reality - so it does not have to be validated empirically. It is validated a-posteriori, by the virtue that it
works. No one could
so far postulate a better method. Maybe there is a better one, but so far no one could find it. Fortunately for us (freethinkers-empiricists-materialists) we are not “married” to any system. If a better one comes around, we are glad to change.
When it comes to formal, axiomatic systems, the empirical method cannot be used. Instead we set up some axioms, and some rules of transitions (grammar). Then we postulate propositions and try to find out if the proposition is a logical corollary of the axioms. If they are, we have a “true” proposition. Mind you, that proposition is only “true” within that particular axiomatic system. Some propositions cannot be decided within that axiomatic system.
When the proposition is about the “past”, neither method can be used. We must resort to testimonial evidence. This type of evidence is the weakest of all, and must be used only when everything else fails. There is no failsafe method to separate the true propositions from the false ones. We must weigh the testimonies of people, what we know about the people, etc… and reach an estimate about the probability of the testimonials. Fortunately, this method does not have to be used in this case, since the “supernatural” is supposed to exist today.
My question is about the purported “supernatural realm”. Is there an epistemology which will allow the non-believer to find if a proposition about the supernatural is true or false? This question is restricted to the existence of “some god”. It goes for all the claims concerning the supernatural, souls, angels, demons, ghosts, whetever…
Now, to be clear about something. I am most emphatically NOT going to go into an argument about the epistemology I presented. Every time I tried to posit the question above, someone jumped and derailed the thread into irrelevance. So, don’t even try, please. Stick to the topic, if you want to. If you wish to talk about the materialist / empiricist epistemology, start a new thread.