Kevin Kiernan's book, "Beowulf and the Beowulf Manuscript," challenges the traditional dating of the Beowulf poem, suggesting it may be contemporary to the Cotton Vitellius A XV manuscript (late 10th/early 11th century) rather than originating in the 8th century. Kiernan's argument is based on detailed analysis of the manuscript itself, including paleography, codicology, and the use of technology to uncover hidden details. This re-dating has significant implications for understanding Beowulf's historical and cultural context, emphasizing the importance of studying the physical manuscript itself.