There was a philosopher in the 1960s whose name I can’t remember at the moment, who was one of the few to study mystical states.
He had an interesting idea: in those states, all is one. There is no past no future no present. No inner no outer. Can’t even say “experience” because then one would have to imagine not-experience. In short, it’s a state with no possible categories.
It’s not a blurring of categories: There’s just no categories because there’s no other – no boundary condition across which there is an ‘other’ to compare with. No here and there.
So when people get out of these states, they sound absurd to people who don’t grasp such things.
They’re incapable of describe WITH *any* categories a state without categories.
Ah here’s the guy! https://en.wikipedia.org/wiki/Walter_Terence_Stace
I think the Wikipedia writers weren’t a fan of his, but Wikipedia is heavy with particular philosophies dominating the editing styles
Some of what he wrote hasn’t aged well — not every philosopher is one of “the greats”. But had a few unique ways of looking at things that stood out for me as explanations (such as the category problem) that no one did before or really since, probably because the study of the experience of experience isn’t something that “real thinkers” thinks is a worthy pursuit.