Categorical dissolution is the process Krauss identified as the structural occasion of the expanded field. A category dissolves not through theoretical argument but through material practice producing things the category cannot accommodate. By the late 1970s, "sculpture" had been applied to earthworks, mirrors, photographs, performances, and temporary installations—the category had become so elastic it described everything and therefore nothing. The dissolution was not a failure of definition but a transformation of the field: the material conditions of artistic production had changed (new technologies, new patronage structures, new institutional willingness to exhibit non-traditional work), and the change made positions occupiable that were previously latent. The adequate critical response was not to defend the old boundary ("this is not really sculpture") but to map the new positions and develop evaluative criteria appropriate to them. AI is producing categorical dissolution across authorship, originality, creativity, and every framework built on the assumption that these categories describe stable, intrinsic properties rather than institutional constructions. The dissolution is irreversible—not because the categories cannot be defended rhetorically, but because the material conditions of production have rendered them inoperative. The choice is whether to map the new field with rigor or continue applying inherited labels to positions they were never designed to describe.
Krauss's expanded field essay did not lament categorical dissolution—it treated dissolution as the productive occasion for structural analysis. The essay's opening acknowledged that calling everything sculpture made the category useless, but the uselessness was not a problem to be solved by tighter definition. It was the symptom of a field that had expanded beyond the capacity of a single category to organize it. The diagram mapping landscape/not-landscape and architecture/not-architecture was not an attempt to restore "sculpture" to coherence but a demonstration that the old category had been superseded by a field of positions no single term could encompass.
AI is producing dissolution at compressed speed across multiple domains simultaneously. "Authorship" applies to texts written by humans, texts generated by AI, texts produced through iterative collaboration, texts assembled from fragments by multiple authors using multiple tools—the category has become infinitely elastic. "Photography" applies to images captured by cameras, images generated by diffusion models, images assembled from 3D renders, hybrid images combining capture and generation—the indexical paradigm that grounded the category's meaning has been technically superseded. "Code" applies to human-written programs, AI-generated implementations, architectures specified in natural language—the distinction between writing code and directing its generation has collapsed. Each dissolution produces institutional crisis because institutions are organized around categories, and when categories dissolve, the institution's evaluative frameworks fail.
The defensive response—prohibiting AI use, requiring disclosure, reasserting the importance of "authentic" human production—is structurally identical to the art-world response to Minimalism and Conceptual art in the 1960s. Critics declared that industrial fabrication, instructional specifications, and dematerialized practices were "not really art." The declaration did not stop the practice; it revealed the institution's inability to accommodate it. New institutions emerged (alternative spaces, new journals, revised MFA curricula), and the old institutions eventually adapted or became irrelevant. The AI transition is following the identical trajectory, but the stakes are broader (affecting knowledge work generally, not just art) and the speed is faster (years rather than decades).
The expanded field framework is not relativism disguised as rigor. Krauss insisted that mapping the field required precision about what positions existed, what logical relationships defined them, and what material conditions made them occupiable. The framework distinguished between positions actually occupied by practitioners and positions that were logically possible but materially unavailable. Applied to AI, this means the expanded field includes human-AI collaboration (materially occupiable, widely practiced) but not artificial general intelligence operating without human direction (logically possible, not yet actual). The rigor is in the mapping, and the mapping is empirical—it describes the field that material practice has actually produced rather than the field one wishes existed or fears might exist.
The concept is implicit in "Sculpture in the Expanded Field" (1979) and becomes explicit across Krauss's subsequent work, particularly in her analyses of medium specificity's crisis. This volume formalizes categorical dissolution as a general process applicable beyond art to any domain where AI is dissolving inherited categories of production and evaluation.
Material practice dissolves categories. Not theoretical argument but the production of things the category cannot accommodate—the dissolution is empirical.
Elasticity signals inoperability. When a category can be applied to anything, it describes nothing—the symptom that mapping is required.
Defense of boundary is futile. Asserting "this is not really X" does not stop the practice—it reveals institutional inadequacy.
New institutions emerge. When old frames cannot accommodate new positions, new framing apparatuses are built—slowly, contentiously, provisionally.
Mapping is empirical. The expanded field describes positions material practice has made occupiable—rigor is in precision about what exists, not speculation about what might.