COSTUME AND ITS FUNCTIONS A Category Split

The framework treats costume as a single primitive: an optimization target the system ispointed at, invisible to the wearer, persistent across context. The Instrument Problem (Eneev,2026e) and subsequent papers describe costume as performance for an audience — the frontstage of identity that hides or distorts the back stage of actual content. This paper argues thatthe framework’s costume category collapses at least two functions that the structural primitivecan serve and that produce surface-similar output. The first is costume-as-deception:performance for an audience, hiding content, the audience-facing function the frameworkcurrently describes. The second is costume-as-shelter: retreat from content too painful to stayin, a self-facing function in which the costume is not a mask the speaker performs but a placethe speaker goes. A possible third function — costume-as-construction, in which the costume isthe content being made rather than something covering content underneath — is named butnot developed. The split matters because the intervention against deceptive costume may differfrom the intervention against protective costume: stripping a shelter is not the same operationas stripping a mask, and clinical or analytical work that conflates the two may produce harm incases where the costume’s function is protective rather than performative. The clinical claimhere is conditional. The cases documented in this supplement are one hermeneutic reading of alyric and one autoethnographic four-book arc; the general claim that conflation producesclinical harm requires evidence the supplement does not supply and that integration withphase-based trauma models (named as future work in Section 7) would be required toestablish. The harm claim is therefore scoped: in the documented cases, function-blindintervention would have produced different effects than function-aware intervention;generalizing beyond those cases requires clinical evidence not yet collected. The paper groundsthe split in a worked example from a 2012 Lana Del Rey lyric, distinguishes the new functioncategories from the framework’s existing anti-costume and basement-costume cases, andproposes detection signatures that could discriminate function from structure in surface text.The framework’s existing claims about costume structure (invisibility to wearer, intensificationover time, non-removability) are preserved and apply to all three functions. What is added is afunction layer beneath the structural primitive.