E.g. you see a dog. The dog is in a relationship to you otherwise you wouldn't be able to see.
Hmmm...I would modify this a bit. The dog doesn't exactly have a *relationship* with me. The dog interacts with light. That light then interacts with me. I process the information from that light and thereby 'see' the dog.
Now imagine more generally something. Further imagine that it has no relationship to you, because it is independent of you/your mind and it is in itself.
Easy enough. Just take anything I have never interacted with anything it has interacted with.
That is the strong version of objective: Having reality independent of the mind. But that is as really independent of the mind unknowable.
OK, here is where I disagree. Just because *I* haven't interacted with it, doesn't mean it is unknowable. It just means *I* have no basis for knowing about it. others may well through their own interactions with it.
It is the interaction that makes something knowable. To whom it is knowable is determined by the chain of interactions.
I.e. there is no knowledge of an observer independent reality other than it must be there.
Again, I disagree. The reality is because of potential interactions. Things are *defined* by the range of possible interactions they engage in.
So, for example, I don't think it is meaningful to talk about a 'thing in itself'. That would imply it has an existence distinct from the ways it interacts with other things. And that, I believe, is fundamentally wrong.
Another way to put it: it is literally meaningless to say that something exists that doesn't interact with anything else.