I didn't say that I can't define consciousness. The problem is that consciousness doesn't have a reasonable objective definition. So my definition is subjective: "Consciousness is my ability to perceive and feel, for example the ability to feel pain or to dream." HN is not very good for this type of discussion, we (or anyone reading this) can continue here if you want: http://public.enterprisewiki.co/7a8b0605-d425-460d-8b57-354a....