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well you're providing a case in point. You're just flatly stating that experience is of no use in the theistic realm. You aren't explaining why. . . . .
No, you are incorrect. I think experience is of great use in the theistic realm. In fact, it could be argued that without tradition and fear of mortality, experience is the the sole force that keeps religion alive.
But the OP presumes a discussion about the validity of religion where arguments are being made. Perhaps I'm mistaken, but I assume these religious arguments implied by the OP are presented when there is opposition. Why would any group of like-minded people need to present arguments among themselves?
Now if the opposition is a skeptic, or an atheist, or a good scientist, or anyone who holds no religious belief, the argument falls outside the theistic realm. It's moved into the philosophical and/or scientific realm. In which case, the professions of experience are going to be heard and maybe even appreciated, but ultimately dismissed when assigning any validity to the arguments in favor of the mystical. Simply because one experiences something that to them seems magical doesn't make it so.
. . . .
If many sane, moral, intelligent people throughout history have experienced the "supernatural bossman" and describe the experience similarly, why, in this example is experience seen of no value? . . . .
It has some value in your "theistic realm". It bolsters the notion that there is something intangible that ties us all together.
But in our implied discussion, one would have to then ask how the experiencers know the experience constitutes something intangible and not simply a reaction we are all capable of because of similar brain structure or emotional capacity; something very tangible.
Outside of the theistic realm, the experience itself does not provide the validity. Only the source or the processes do.
. . . . When many sane, moral, intelligent people throughout history experience a particular scientific experiment and describe the experience similarly, why, here, is experience suddenly of such high value? . . . .
I think you're taking liberties with the word "experience" here. These people are describing the processes of the experiment and the outcomes, not the overall experience of running the experiment.
. . . . Do you know what empiricism is? It is the view that experience is a highly valid way of knowing about reality. Empirical science is based on experience.
Sure, but in the case of religion, are we experiencing something divine, or something with a more natural explanation.