Avesta word for "praise-song" (Bartholomae: "Lobgesang"); that word is not actually attested in any text. The surviving texts of the Avesta, as they exist today, derive from a single master copy produced by Sasanian Empire-era (224–651 CE) collation and recension. That master copy, now lost, is known as the 'Sassanian archetype'. The oldest surviving manuscript ("K1") of an Avestan language text is dated 1323 CE. Summaries of the various Avesta texts found in the 9th/10th century texts of Zoroastrian tradition suggest that a significant portion of the literature in the Avestan language has been lost. Only about one-quarter of the Avestan
The Book of Dave is discovered centuries later and used as the sacred text for a dogmatic, cruel, and misogynistic religion that takes hold in the remnants of southern England and London following catastrophic flooding. The future portions of the novel are set from 523 AD (After Dave). The book alternates between Dave's original experience and that of the future devotees of the religion inspired by his writings. Much of the dialogue in "The Book of Dave" is written in "Mokni", an invented dialect of English derived from Cockney, taxi-drivers' and Dave's own usage, text-messaging, and vocabulary peculiar to the late 20th and early