I think this discussion is probably dead being that it's 24 hours old now but I just came across this Wittgenstein quote and felt it might be relevant and inspi

I think this discussion is probably dead being that it's 24 hours old now but I just came across this Wittgenstein quote and felt it might be relevant and inspire some thought on this. The limits of my language stand for the limits of my world. There really is only one world soul, which I for preference call my soul and as which alone I conceive what I call the souls of others. The above remark gives the key for deciding the way in which solipsism is a truth. (Wittgenstein 1961: 49) The I makes its appearance in philosophy through the world’s being my world. (Wittgenstein 1961: 80) Here we can see that solipsism coincides with pure realism, if it is strictly thought out. The I of solipsism shrinks to an extensionless point and what remains is the reality co-ordinate with it. . . . I have to judge the world, to measure things. The philosophical I is not the human being, not the human body or the human soul with the psychological properties, but the metaphysical subject, the boundary (not a part) of the world. (Wittgenstein 1961: 82) This is the way I have travelled: Idealism singles men out from the world as unique, solipsism singles me alone out, and at last I see that I too belong with the rest of the world, and so on the one side nothing is left over, and on the other side, as unique, the world. In this way idealism leads to realism if it is strictly thought out. (Wittgenstein 1961: 85)