I didn't bother reading any of your post, but my area of study is philosophy so I'll give you the reason why I know I have consciousness: It is directly observable to me via introspection. Any denial of consciousness would also necessitate a use of consciousness. For example, "I don't have consciousness" requires that "I" contradict myself. Therefore, consciousness is axiomatic. All knowledge as such requires the precondition that I am a conscious entity focussing my awareness on something.
Acceptance of consciousness does not necessarily implicate any type of mystical dualism.
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