In the conventional opposition of real and ideal, or matter and mind or however it is named, the two poles are the 'outer' world of material things subject to natural laws and the 'inner' world of perceptions, thoughts and feelings a colourful swirly sort of realm full of ghostly entities. Here the line of division has been drawn according to the currently prevalent and implicit metaphysics. Better to draw the line where it cannot be crossed, where the 'inner' is what cannot be seized or triangulated from the 'outside' and vice versa, that is consciousness (in the 'hard' sense) and its objects of various kinds. As far as the 'outer' is concerned the further division is between objective realities including the bodies of other selves, and the subjective inwardness, that is, consciousness, of others which you somehow (but how?) know to be of the same kind as your your own but without any direct access. Stated like this the dividing lines are essentially axioms of experiencing at all.