Book excerpt: "What determines the significance of a work of art? Doe it abide eternally within the work? Or is it continually constructed and reconstructed from the outside, through the work's presentation? The historical shift from autonomous modernist object to postmodernist critique of institutions, from artwork to discursive context, is the subject of Douglas Crimp's essays and Louise Lawler's photographs in On the Museum's Ruins. Taking the museum as paradigmatic institution of artistic modernism, Crimp surveys its historical origins and current transformations. The new paradigm of postmodernism is elaborated through analyses of art practices broadly conceived--not only the practices of artists but also those of critics and curators, of international exhibitions, and of new or refurbished museums."--back cover.