The basis of the book is a compilation of texts: personal testimony, interviews with survivors, contemporary documents, memoirs, and academic assessments.
By the mid-12th Century, the still-surviving Book of Llandaff – a compilation of texts covering some 500 years of history of the Welsh diocese of Llandaff – recounted that Bardsey "was called the Rome of Britain", not least of all "for its sanctity and dignity, because there were buried therein the bodies of 20,000 holy confessors and martyrs".
Some are just very large compilations of text from individual sources such as newspapers of record or the World Wide Web compilations large enough for the diversity in the source to act as a surrogate for representativeness.
These compilations of text segments, coming from multiple interviews but falling under a common theme, served as the basis for each subsection presented in the results section of this paper.
Text manuscripts include Gospel Books, Psalters, the Book of Enoch, homilies, liturgy, chant, saints' lives and miracles, theology, law, and compilations of texts related to divination and popular magic.
Ebers papyrus, Egyptian compilation of medical texts dated about 1550 bc, one of the oldest known medical works.
When the researchers ran the analysis on a compilation of Indus texts, they found that the patterns of symbols were strikingly similar to those in spoken languages.
