>>17927830 (OP)
>Absolute non-existence
>the true nature of qualia
>the substrate of existence
>the unknowable unknowing
Genuinely mysterious or at least hard to wrap your head around.
>A structure contradicting fundamental logic
We would just have to invent new logic then. Kind of like when Frege's version of set theory got BTFO by Russell's paradox. If this happened with, say, first order logic, it would be really shocking, but the reaction wouldn't be to embrace the contradiction, it would be to abandon first order logic and look for something similar but noncontradictory to replace it, so I don't feel like it would ultimately be that meaningful.
>infinite recursion of meta-causality
The answer is simply that not everything has a cause. This is unintuitive at first but not that bad once you get used to the idea.
>consciousness without subject/object duality
>the simultaneous totality of all possible experiences
You're just describing stuff that would be pretty wild if it existed, but doesn't. I mean maybe you feel like you experience these things on mushrooms o algo, but I don't buy it.
>Timelessness as a state, not an absence
This one just seems confused. Timeless DOES mean no time, just like weightless means not having weight and being bitchless means having no bitches. Maybe I just don't get this one though, idk.
>A dimension beyond all known dimensions
This one is definitely confused. A dimension can just be anything quantifiable and continuous. So yeah I can imagine a fifth dimension fundamentally unlike space and time: temperature. Or here's another: density of a material. Even a dimension unlike anything you're familiar with wouldn't necessarily be anything crazy.