This paper asks: what is a work? Not who made it, but what it is. The question isforced by a precise observation: authenticity has become infinitely reproducible. Ifthat is true, then what has been reproduced is not Δ, but only the structure fromwhich Δ has already departed. Building on Paper 8's repositioning of Δ as generativeground, this paper proposes a redefinition of creative output from within the E=mcThought Principle. A work is that in which the structure of thought through which Δhas passed is placed externally, and which stands in a state capable of againinducing separation in contact with the Δ of another. This definition deliberatelyexcludes the author. It operates simultaneously across four domains: art theory,copyright, AI-generated objects, and primitive art. The paper traces the failure ofthree existing models—the completion model, the authorship model, and thetransmission model—and proposes a shift from the container to the recursivecatalyst as the governing metaphor for what a work does. It repositions η not as anadditional parameter but as the condition that allows the trace of Δ to remainstructurally active after externalization, thereby connecting the internal event ofΔ-passage to the external state of contact-readiness. It responds to AI-generatedstructures with a structural consequence rather than a tendency: structuresgenerated without passing through Δ cannot induce separation—they can onlyoverwrite. What appears as an exception is not a violation of this structure but anindication that Δ-passage occurred elsewhere in the chain. Whether any suchpassage occurred is always decided post-hoc, in contact; prior certification isstructurally impossible. The paper concludes that culture persists not by preservationbut by repeated restart. This paper is the bridge between Paper 8 (Δ as Ground) andPaper 10 (Δ Beyond the Individual), establishing the work as the minimum unit ofrecursive cultural regeneration.
Katsutoshi Mayumi (Sat,) studied this question.