As Hal foster... writes, miss Krauss cannot be blamed of the conceptual limitations of the time... if read within a historical context, this book Is very enlightening and very compromised with structural analysis, as it is with it's by- products (of wihch, we often make so much of a deal these days) ... this includes early -and pure- examples of deconstructivist meta-texts. It seems to me that her efforts have not been scaled to the dimension they have. It is (still) a formidable introduction for anyone interested in really getting involved in post- structural thinking. A sort of golden thread for the roots of contemporary thought. Her, "sculpture on the expanded field", is illuminating, don't miss it. I really regret having rated "the optical unconscious" 4 stars, it must also be 5. Such risks taken by an art historian must not be taken lightly. She has taken first, as few others,the steps to construct--- the difference---.