Page numbering page). Even numbers usually appear on verso pages, while odd numbers appear on recto pages. In the printing industry, in cases where odd numbers appear on verso pages and even numbers on recto pages, this is referred to as "non-traditional folios" (in the past, it had been referred to as "Chinese folios", however this term has fallen out of favor in recent years). In books, some pages, known as "blind folios", of the front matter and back matter are numbered, but the numbers are not always printed on the pages. Publishers are not consistent about how they number the pages
This is Not a Book assignment shows the reader something that "This is Not a Book" could be. Page 42 of "This is Not a Book" is missing. This has caused many readers to speculate what has happened to it. Speculation regarding the missing page is largely random. The assignment "random occurrence" is an homage to Marcel Duchamp, "window" is an homage to Yoko Ono, "chance operation" is an homage to John Cage, "conundrum" and "top secret document" are an homage to Oulipo, "bureaucracy" is an homage to José Saramago and "voyage" is an homage to Bas Jan Ader. This is Not a Book This