“Experience” is the name I have been giving to Reality. I don’t like the word because it implies something that is experienced and something that experiences, things that I don’t think exist, but I have to have some word for it: “Experience” will have to do for the minute. — Dominic Osborn
So two points on that.
First, I accept the full force of solipsism on a non-solipsistic basis. So it is because I believe - after Peirce - that our mentality is "pure symbolism", that this then is a justification of the Kantian impossibility of knowing the "material" thing-in-itself.
I "know" - as a reasonable belief derived from scientific investigation - that even when I see colours, or shapes, or motions, such perceptions are indirect constructions. It is modelling. And that leaves me "trapped" on the side that is the play of symbols. There is no getting outside my own mental creations. It is a categorical difference.
And yet of course, the very idea of a modelling relation only makes sense if there is indeed a world, a thing-in-itself, that causally constrains the impressions I might have. So to believe in this epistemic "full force" solipsism - the one due to being trapped in my own play of symbols - requires also the ontic commitment that there is something the other side, a material world. It would be the biggest surprise possible, the most impossible conceivable thing, for it not to be true that my impression of there being a world is not sustained by there being a world.
But then beyond that, this semiotic argument also pretty much mandates that the world I think I see is such a selective and self-interested impression that I'm not really seeing that world at all. This is especially obvious when it comes to talking about colours or odours. But rigour would demand it applies to primary qualities as well as secondary qualities.
Anyway, you can pursue that semiotic argument still further (winding up in pansemiotic metaphysics). But the key point is the strength of my epistemic solipsism is due to a positive belief in the world - a belief that the world exists, therefore I must be symbolically modelling, and therefore I am trapped due to the necessary indirectness of this modelling relation. If I stopped believing in the world in this fashion, my reasons for accepting the force of solipsism (which is usually due to the weakly defined notion of "mind" rather than the strongly defined notion of "symbol") would collapse. I would lack an evidential basis for making that very claim.
Second, or continuing on from that really, you are in the same boat as you can't talk about "experience" as "just whatever everything is" in some uncontextual fashion and claim that to be meaningful speech. For any statement to be intelligible, it has to be so by virtue of a claimed contrast.
To speak of "experience", it must have a definition in terms of what is its "other". And you are claiming to be talking about "a state" which has no other. In logic, the principle of non-contradiction fails to apply and so technically your claim is simply vague. It may sound as though you are making a definite reference to something, but you really aren't.
Now you try to sidestep this difficulty by starting with a crisp dichotomy - the usual one of self and world. Then by virtue of their metaphysical intelligibility - it makes dialectical sense that such a mutually exclusive and jointly exhaustive pair such as self and world could exist - you can claim dissolve each into the other to arrive at a third thing. Let's call it dasein. Let's call it "experience". Let's call it whatever. You only have to point to the fact that starting with the fact of a strong separation, that gives you the grounds to reverse the separation and arrive back as at some logically unseparated state.
That's fine. It's good logic. But we need to call it what it really is - and that's vagueness (or Firstness for Peirce). And it is as far away from actual experiencing of any phenomenological kind as it is from the noumenal world.
Being that, it is unlike anything an actual traditional solipsist - as an end game idealist - is conceiving of. We are not reducing everything to some kind of mental stuff, some play of ideas. We are reducing everything to vagueness. We have gone way beyond the kind of definite being that an idealist is imagining as the basis of all existence.
So strong epistemic solipsism is warranted in the sense that we "know" that ourselves and our impressions can only be a play of symbols. We are trapped on one side of the modelling relation we have with the world (but we can only "know" that by believing the world to be there on the other side).
And then strong ontic solipsism is not warranted. If you try to reduce our state of mental representation, our embodied state of being, to its greatest state of simplicity, you find that the only way that this can be done rationally is by beginning with the definitely separated and - from there - argue towards their foundational unity. And that unity can only be a state of vagueness or utter indeterminacy.
And indeed, we can do that, even using weaker ontic notions such as self vs world rather than my preferred symbol vs matter.
But we then arrive at a "state" that resembles no state of mind. We arrive at a "vagueness" that could hardly satisfy any traditional notion of idealism and thus of solipsistic being.
So idealism/solipsism fails as we track back towards the very origins of ontic possibility. But that then becomes why I say there is this other ontic expedition of pan-semiosis. Instead of being a bug, the fundamentality of vagueness is now the metaphysical feature.
The apparent complexity of experience is accounted for by an external world which is complex, which is many things. — Dominic Osborn
Remember that my original argument to you was that you were having to assume at least two simples - the self and world. So my argument did not rely on the world being complex (even if it surely is).
That is to say that I only think that there are two things, the experience of the seeing the rock and the experience of having the pain after kicking it, because I mistakenly believe that there is such a thing as the rock (independent of my experience) and such a thing as a foot (independent of my experience), each of which is independent of the other. — Dominic Osborn
But what warrants you treating the pain as real, the rock as illusion? This shows you have already assumed that existence has the character of being "mental". And as I argue, you can only claim that intelligibly by virtue of already believing that "mental" stands in meaningful contrast to something "other", such as physical reality. Thus we are starting at an irreducible complexity that contradicts anything further you might claim about there be a monistic simplicity when it comes to this thing called "experience".
Another argument. If experience is complex, then it is many things. If it is many things, where are the gaps in experience? Experience is one unbroken flow. How is it divided into different bits? — Dominic Osborn
But we know that if you run the frames of a strip of film through a projector then - at the right rate - you experience an unbroken flow of imagery. Or if we introspect on dreams with accuracy, we discover each is in fact a "still", just a still with a psychological sense of swirling, camera-tracking, motion in which nothing actually changes in the momentary snapshot "view".
So there is abundant evidence - both empirical and even phenomenological - that we can be fooled by the general assumption experience has no composite structure, no "bitty" complexity.
Each part of my experience implies all of it. Red implies blue and the whole colour spectrum. Colour implies texture, form, etc., the other components of the Visual. The Visual implies the Aural, the Olfactory, etc.. Each tiniest sensation implies the whole experiential panorama. — Dominic Osborn
That makes no sense to me. If I am deaf and blind, how would my remaining kinesthetic knowledge imply anything about those other sensory modalities?
And if we imagine removing every modality, what are we going to be left with. No state of sensation surely.
You can’t know if this is a dream, and when you are dreaming, you can’t know that it is dreaming. Again — Dominic Osborn
You can’t know if this is a dream, and when you are dreaming, you can’t know that it is dreaming. Again, to merely assert the point again, though in a non-epistemic way: what I dream is just as real as the waking world. — Dominic Osborn
Again, you can't argue positively for ontic solipsism on this basis because you are trying to employ terms like "dreaming" and "awake" in ways that presume the knowable difference you are seeking to deny.
Epistemic solipsism on this score is fair enough because now you are disposing of the "knowing" with all its absolutism. You are instead beginning with the structure of your beliefs and agreeing that's as good as it gets.
But then those beliefs are the ontic commitments. And so to talk about dreams and awakeness is intelligible speech - something we could actually argue about meaningfully, with ourselves even - because we accept they are terms representing different categories of experience. That level of complexity is already being taken for granted. Thus destroying the undividable simplicity you require to make ontic solipsism fly.
Experience is, in a way, nothingness. But not nothingness in the sense of absence, or in the sense of blackness, or silence, or air, but in the sense of––nothing determined, in the sense of everything piled on top of everything else (a metaphor), in the sense of having no characteristics because having all characteristics, in the sense of being identical to everythingness. I think Experience is like what Anaximander called apeiron. I think Experience is like chaos, what there was before Jehovah started dividing this from that. — Dominic Osborn
Or as I've argued, not nothingness but vagueness, firstness, indeterminacy, potential - and yes, apeiron.
So the contrast becomes not that of something vs nothing, light vs blackness, but indeed more like an everythingness that is thus equally a nothingness in that all possible distinctions are overwhelmed by their own lack of proper contrast.
So it seems you do want to arrive at the same fundamental state as I do. But as I have said, I don't see this as a species of idealism or solipsism. It is a metaphysics that goes beyond all that. It undermines both realist and idealist ontologies in radical fashion.