In this section we address what we might call the *challenge from authorship*: the idea that philosophy is something that only persons, or at least minds, can produce. This view has not, to our knowledge, been explicitly defended in just this form, but it gives shape to an intuition that many philosophers may have: philosophy is a person-only domain. An imperfect comparison is with art: One might deny that an image generated by an AI system is an artwork, because no artist exercises the relevant kind of intentional control over its production.[^1] One might think, for similar reasons, that philosophy can only be done by people: no text produced by an LLM can be a work of philosophy, because no philosopher lies behind it. Similar to the study of art, the study of philosophy is often organised around individuals: undergraduates take courses on Kant's ethics or Lewis's metaphysics, and conferences are devoted to, the work of particular philosophers. Physics students, on the other hand, are taught Newtonian mechanics from a current textbook, and the course loses nothing if Newton's own writing is never looked at. In the sciences, then, what a text contributes can be carried by other texts. In philosophy, the contribution and its original presentation are harder to prise apart, and we might take this as evidence that a philosophical work is bound to the activity of the particular person who produced it, in a way that the sciences are not. We will now try to make this challenge from authorship more precise, by considering how far Davies' *performance* theory of art transposes to philosophy. Davies writes: > [T]he work – what the artist achieves – is the process eventuating in that product. Works themselves are neither structures nor objects simpliciter, nor are they contextualized structures or objects. They are, rather, intentionally guided generative performances that eventuate in contextualized structures or objects (or events, as we shall see) – performances completed by what I am terming a focus of appreciation. (2004, p. 97) On Davies' view, when a painter paints a picture, the canvas is what we attend to, but it is not the work. The work is the artist's intentionally guided activity in producing the canvas; the canvas is "the focus of our appreciative interest in the work" (2004, p. 150). What we appreciate in a painting, on this account, is an achievement, and an achievement is individuated by the activity that brought it about: the same surface, reached by some other route, would be a different achievement. Provenance, on this view, does more than supply context: facts about how the object came into being help determine what the work is and what is properly appreciated in it. Davies makes the case with examples in which indiscernible surfaces differ as works. In one kind there is no performance at all: an instance of the verbal structure of *Kubla Khan* might be generated by desert wind, or a monkey at a typewriter. A theorist who identifies the poem with its verbal structure must then either count these as instances of Coleridge's work or explain why not (2004, p. 102). There is a surface indistinguishable from the poem with no writing of a poem behind it, and the corresponding case for philosophy — a text indistinguishable from a philosophical argument with no philosophising behind it — is the one an LLM presents. Questions of misattribution, where one performance is taken for another, do not bear on it. If Davies is right, the surface does not by itself settle the work. Here is what the analogous proposal for philosophy would be. A philosophical text is not itself the philosophical work: the text is the product of a person's philosophising, and reading it is a way of engaging with that prior activity. The activity, on this proposal, is part of what the work is, so that there is a philosophical work only where the philosophising has taken place, which makes the challenge a constitutive one. If no one has philosophised, there is no work to which the text gives access, however the text reads — an LLM text would stand to philosophy as the wind-made *Kubla Khan* stands to poetry. Should the transposition be accepted? We do not think it should. In the art case Davies' move is licensed by an evaluative fact: indiscernible surfaces can differ in artistic value, the wind-blown surface worth nothing as a painting where a brushed one may be worth a great deal. The transposition therefore commits its defender to the corresponding claim about philosophy: that two texts containing the same argument could differ in philosophical merit. We can find no difference for the merit to consist in. If two texts contain the same argument, including the same inferential moves, the same considerations count for and against them: whether the argument is valid and whether the objections are answered are questions about the texts' contents, and two texts with the same contents receive the same answers. Their philosophical merit does not vary with the route by which the words came to be written. The discipline's evaluative practice is built on the same denial. Journals strip author information from submissions before review because facts about authorship are treated as potential sources of distortion; if texts with the same contents could differ in merit, anonymising would discard evaluatively relevant information, and review would not be designed this way. The grounds for the judgement lie in the argument as presented, not in the history of its production.[^3] Nor is the author-centred teaching noted earlier in tension with this. That ethics is taught through Kant's *Groundwork of the Metaphysics of Morals* rather than a digest of its conclusions reflects what a reader gains in understanding by working through Kant's own arguments, and is consistent with holding that the philosophical merit so gained is a feature of the text rather than of its author. Suppose the performance theorist holds firm: where there has been no philosophising there is no work, whatever the resulting text contains. This may be allowed, because the thesis in question concerns texts worth reading, and a text can be worth reading without being a work in Davies' sense. Suppose the desert wind assembled not *Kubla Khan* but a sound argument against enactivist approaches to perception, an argument for which no one would deserve credit. A reader who worked through it would nonetheless meet a thesis and the considerations advanced for it, and would be in a position to answer or extend it. Whether such a text is a *work* may then be reserved for texts with performances behind them; what cannot be reserved is the text's being worth reading, since everything that judgement answers to is on the page. Nothing in a text's having had no one behind it, then, settles whether it is worth reading. Whether an LLM can produce a text worth reading is a further question, and a doubt of a different kind bears on it. [^1]: This is not to deny that systems of this kind can produce beautiful images; we return to image generation in Section 4. [^3]: The same location of philosophy in the public text is reached by accounts of philosophical progress. Dellsén et al. (2024) hold that progress is "for-whom" rather than "by-whom": it consists in putting people in a position to increase their understanding, usually by making philosophical ideas publicly available (p. 679). Being put in such a position requires something one can take up and think through, and what is available to be taken up is the text. A philosophical contribution so understood is constituted by what the public text makes available, which a view that locates the philosophy in the antecedent private activity mislocates.