A crucial distinction I often fail to make. There's the spatial externality of physical objects. Then there's the transensory state of "things in themselves", if we are feeling generous enough to admit the existence of such. I personally consider the former "outsideness" to be generated internally, much as say a hallucination or psychotic delusion can equally appear totally outside you. DMT users testify to being submerged into an underground cavern that feels every bit as real as the normal physical "outside." I also question the nature of physical outsideness as being something that goes on without my being "inside" my brain. That extendedness of my consciousness into an animated movie universe derives from an ongoing experienced contrast with my being inside my own body/brain. It is in other words synthetic, generated dialectically thru movement and perception, and not a static given that precedes my experience of it.