Michael Tymn is one of the world's foremost living experts on afterlife studies. His earlier book The Articulate Dead, a study of apparent spirit accounts reaching us through mediums, presented evidence in support of the "spirit hypothesis." He concluded that the best of these accounts could not have been inventions of the subconscious mind of the medium, for they contain a great deal of information, later confirmed to be true, unknown to the medium. But this same information was well known, in earth life, to the person whose spirit was said to be communicating through the medium. Tymn is a master of this "evidential" approach used to evaluate spirit communications. There is perhaps no one living today who has dissected so many of them and argued so successfully for their authenticity. This method of analysis, it seems to me, makes it close to certain that we survive our physical death and enter another world as "spirits" with memories, personality, and character intact.