Etude, à partir d'une discussion autour d'une citation de Catherine Belsey, de la figure du narrateur dans Le nom de la rose d'Umberto Eco et Le meurtre de Roger Ackroyd d'Agatha Christie

catherine belsey presents her model of realist fiction as one of "intersubjective communication, of shared understanding of a text which re-presents the world [and which] is the guarantee not only of the truth of the text but of the reader's existence as an autonomous and knowing subject in a world of knowing subjects" (catherine belsey, Critical Practice, London and New York: Methuen, 1980: 69). Discuss the usefulness of this realist subject with the consideration of the narrator and detective figures in either or both, umberto eco, The Name of the rose and agatha christie, The Murder of roger ackroyd.