We do not logically experience anything. We create logic from experience.
Just because we cannot create logic for something, does not mean that
we can not "know" such a thing. Most of the experiences that I have
in life are indefinable, yet I know they happen.
Of course we can create questions about the indefinable, I do it every
day. Like: "Why do I feel this way?"
DQ/sq is a structural format, there is nothing more to find. We can
certainly create a more complex structural format, but we do not find
this, we build it.
We are sure when we do not ask any more questions. I am sure I have
eyes in my head, so I do not question it and move on. If you are sure
about DQ/sq, then you can move on to other things. No need to dwell
on things you are sure of. That is not the purpose of creating a
metaphysics. Promoting a metaphysics is another thing altogether, then
we answer questions put to us.