In Eco’s work between around 1960 and 1992, “openness” in a modern literary text can mean (a) “permitting more than one interpretation,” and (b) “requiring a good deal of decoding work from the reader,” which is close to my own position. These two aspects of openness are demonstrated using Baudelaire’s Les Chats, in regard to which Eco denies that the text may be cristallin in Lévi-Strauss’s sense, while still requiring constructive effort from the reader. It is apparent that this term (...) is equivalent to Riffaterreʼs textual “monumentality.” Eco does not go into detail about the reader’s work in assembling the text’s global propositional structure. It is left to Riffaterre and myself to detail the various stages of this work, involving comparison of images in order to discover their common underlying generative proposition. In contrast to Riffaterre, I have long suggested that the modern poetic text is built on two such propositions. It is at the stage of relations between text and sociolect that Eco contributes much to modern poetics. Openness (b) seems to be a prerequisite for perceptual change in the reader, produced by contrast between textual structure and its sociolectic context. Riffaterre prefers to remain within the text/intertext/interpretant triad, preventing him from describing the text-sociolect relation, where the propositional innovation of the modernist text takes effect. (shrink)