content: This (only having awareness of your own consciousness) is really only a problem if your idea of consciousness is derived from the idea of a Cartesian mind, which is clearly the case for CGP Grey. This consciousness is some kind of internal consciousness that is only accessible to you, maybe it is in your brain or maybe it is non-physical, but even if you were to hook someone else up to a machine that can read their brain and make a representation of their consciousness accessible to you, you aren't accessing their real consciousness, only its representation on a computer screen / simulation / holodeck. These are problems caused by placing the mind inside the self.