If Harris had a clear vision for this book, it wasn‘ apparent to me. Witness the title which cites the sleep intervals experienced in the “early modern era” but linked to no major plot line. We are presented with a post apocalyptic world where civilization has reverted to the Middle Ages with the church in charge of both the state and piety. The nature of the apocalypse is unclear, the search for meaning muddled. The ending just plain weird.