A book of reviews of books which do not exist and in at least one case could not exist. From the Introduction:
"discourses on the positive aspects of nothingness, on ideal objects in mathematics, and on new metalevels of language."
"Contrary to what the Introduction says, the critic does not have to be chained to the book 'as the convict is ... to his wheelbarrow': the critic's freedom does not lie in raising up or tearing down the book, but lies in this, that through the book, as through a microscope, he may observe the author; and in that case A Perfect Vacuum turns out to be a tale of what is desired but is not to be had. It is a book of ungranted wishes."
