first person vantage

"what might be called the 'first person vantage' is pretty much an irreducible. It is not something I derive or infer from other things; it is something of which I have an immediate awareness. ... 'willing to deny ... the actual existence, of the first-person vantage.' ... seems to fly in the face of our everyday experience." (source section 28) This difference from a Third Person view seems to be an Absolute qualitative difference.