This charming man: Who is the real John Mayer: John Mayer not convinced you should be doing this interview. Not here. Not now. I do not like. Just throw ideas around, but why is asking his publicist, "we can not do all the interviews through a fiber optic hub, why are not artists sitting in a boardroom somewhere Sony with a video conferencing system from Cisco, speaking to reporters in London, Jakarta, Australia? "Human contact is a …