I'm using "rational" here to refer to the part of our mind which attempts to reduce the rock to euclidean geometry. I know rational has some cultural connotations which imply that not rational equals thinking unreasonably, but that's not what I mean here.
I think I pretty well agree with you. That there are multiple types of "knowing" things. For instance, in lower hyperspace, there have been times where I've witnessed my rational mind "translating" "telepathic" communication into english, apparently without permission from myself or my communication partner; I'd be seeing at the same time that the translation was not correct.
I like to think of this as the human survival mind. The strong impulse to know something in the framework of human rational logical thought, is a controlling, dominating impulse. An extremely powerful evolutionary advantage. To know something this way, is to be able to manipulate it to our advantage. I'm not saying this is a bad thing, I enjoy my relatively easy and intellectual life which space has been created for by this impulse in our ancestors. It also makes it really simple for me to know and do what I need to in order to manipulate things into a situation I find preferable - tasty food, better work, sex, chemicals, education, attempting to dominate things by knowing them, etc. Also, this allows us to "know" ourselves, thereby (potentially) overcoming ourselves. Evolving into something greater.
However, I don't think it's a good idea to assume that everything about reality can be put into this form of knowing. I think when we touch other, what seem to be greater, forms of knowing, our evolutionary instinctual survival impulse is to stuff that other knowing into our survival mind. But if the survival mind is much smaller and less-dimensional, attempting to do so may be a negative force in the momentum towards greater forms of knowing. I think most religions come from this, touching something sacred and then humping its leg greedily with a big survival mind red rocket in order to coax it stay around for awhile

I do think we can subjectively use our language as placeholders for these things. But I think when we forget they are placeholders, and we probably have to at some point over and over again, it is important to put our feet back on the ground, and remind ourselves that the most important thing for our survival mind to know, is that it is humble and small.
I sometimes consider that part of what hyperspace teaches is a different way to think and communicate, something the rational mind cannot understand, but a person can experience and then use the rational mind to bring about into reality (even if it cannot understand it), perhaps through genetics, robotics, computers, or some other form of technology.
I am a writer, currently using these forums to build a character for a novel who becomes obsessed with strange things and has a psychotic break. I neither condone nor engage in illegal activities.