According to most adherents of the Latter Day Saint movement, the Book of Mormon is a 19th-century translation of a record of ancient inhabitants of the American continent, which was written in a script which the book refers to as "reformed Egyptian". This claim, as well as all claims to historical authenticity of the Book of Mormon, are rejected by non-Latter Day Saint historians and scientists. Linguistically based assertions are frequently cited and discussed in the context of the subject of the Book of Mormon, both in favor of and against the book's claimed origins.