McGann's archival scholarship has repeatedly documented the contributions of agents other than the named author to the texts that bear the author's name alone. The developmental editor who restructures arguments. The copy editor who alters prose at the sentence level. The compositor whose decisions about lineation change how a poem breathes. The publisher whose commercial calculations determine what reaches the public and in what form. The designer whose typographic choices communicate the text's intended register. Each of these agents makes consequential decisions that shape the published text. The convention of single authorship absorbs their contributions into the author's name and renders them invisible. The AI moment has exposed this invisibility by introducing a collaborator whose participation cannot be concealed in the same way.
The canonical cases in textual scholarship demonstrate the extent of invisible agency. Maxwell Perkins's editorial work on Thomas Wolfe was so extensive that scholars have debated whether the published novels should be attributed to Wolfe, to the collaboration, or to some hybrid category the existing vocabulary does not accommodate. Gordon Lish's editing of Raymond Carver went beyond conventional editing into substantial rewriting — cutting endings, removing sections, imposing the minimalist aesthetic that became identified as Carver's signature style. When Carver's original manuscripts were posthumously published as Beginners, readers encountered texts substantially different from the versions they had known.
In each case, the convention held. The author's name appeared on the cover. The editor received a salary and professional satisfaction. The reading public received the coherent fiction of singular origin. The system functioned precisely because the invisible agents' contractual silence was reliable — editors were paid not to claim what they had contributed, and the convention rewarded everyone for maintaining the fiction.
The publishing industry employs thousands of people whose contributions to published texts are structurally invisible: developmental editors, line editors, fact-checkers, research assistants, sensitivity readers, indexers, proofreaders, designers. Each makes decisions that shape the text, ranging from sentence-level interventions to structural reorganizations to material choices that affect how the text is received. None of these contributions is reflected in the attribution. The absorption is so complete that it does not register as concealment; it registers as the natural order of things.
The AI moment has disrupted this arrangement not by introducing collaboration — collaboration was always present — but by introducing a collaborator whose visibility cannot be contractually managed. The editor can be thanked in the acknowledgments and otherwise erased. Claude cannot. The existence of AI tools is public knowledge, and the markers of AI-assisted writing can be inferred from the prose itself. The invisibility that sustained the convention of single authorship is no longer automatically available.
The concept of invisible agency was developed in McGann's editorial work on Byron and refined through his collaboration with Jack Stillinger on the multiple-authorship tradition. Stillinger's Multiple Authorship and the Myth of Solitary Genius (1991) provided the empirical detail that transformed McGann's theoretical argument into an evidentiary record.
Constitutive, not corrective. Editors and other agents do not merely fix errors; they shape arguments, restructure sequences, and determine what the published text says.
Industrial scale of concealment. The publishing industry employs thousands of agents whose contributions are routinely absorbed into the author's attribution.
Canonical cases. Perkins-Wolfe and Lish-Carver demonstrate the full extent of what the convention can conceal, visible only when archival evidence or posthumous publication breaches the contract of silence.
AI as exception. The AI collaborator's visibility highlights the invisibility of human collaborators, but does not automatically expose them.
Uneven exposure. The current moment reveals AI collaboration while leaving older forms of concealment undisturbed, focusing discussion narrowly.