 Throughout the manuscript , produced on a typewriter without the capacity for italics , Kaczynski capitalizes entire words in order to show emphasis . He always refers to himself as either " we " or " FC " ( Freedom Club ) , though there is no evidence that he worked with others . Donald Foster , who analyzed the writing at the request of Kaczynski 's defense , notes that the manuscript contains instances of irregular spelling and hyphenation , as well as other consistent linguistic idiosyncrasies ( which led him to conclude that it was indeed Kaczynski who wrote it ) . 
