I had a thought about this earlier, and it seems to make sense to me right now but maybe someone else has some input. The idea is basically that wherever there is perception, there is a duality. Perception can be any sensory input also. How are we to examine the thoughts of a person, the content of qualia itself, or anything subjective, since we automatically have to be that person right? So is duality something that will always exist, no matter how advanced we become, or is there a possibility one could solve this from an objective viewpoint? If the mere act of being conscious shields your inner life and your subjective side, then there is a mystery in the universe that in theory can never be solved, but how much sense does that make really?