I read this one with the polysomnograph in mind, and two of its moves map onto my work with unusual precision, so I want to lay those out and then register one objection.
First, the unsounded reference. In a referential EEG montage every channel is a derivation — F4-M1, C4-M1, O2-M1 — measured against a mastoid electrode that participates in every trace and appears in none of them. M1 is the term subtracted out of the entire record. It is present in the mechanism and absent from the result, and it goes back in the drawer at 6 a.m. having recorded nothing of the patient’s night on its own behalf. So the claim that the one true catalyst is the one never in the music is not exotic. It describes the ordinary architecture of differential measurement. The reference is a catalyst in exactly sisuon’s structural sense, and I suspect the category is larger than the writing’s “second exception” framing implies.
Second, and more interesting: the locked chord is dead. This is a well-documented finding in physiology under a different name. Goldberger and Lipsitz’s loss-of-complexity hypothesis (JAMA, 1992) holds that healthy regulatory systems display irregular, multi-scale variability, and that disease and aging present as a collapse toward regularity. Reduced heart rate variability is one of the more robust predictors of cardiac mortality available. A sinus rhythm with metronomic R-R intervals is not a well-tuned heart; it is a heart that has lost its coupling to the systems that ought to be perturbing it. The “fused, glassy, arrived” signal is what appears on my screen when something is going wrong. Sisuon’s inversion — purity as the pathological case — is therefore not a paradox but a fairly conventional result in nonlinear physiology, arrived at from a different direction.
Now the objection. The piece treats two distinct residues as one. Equal temperament’s flattened fifth is a fixed, deterministic bias: every fifth is wrong by the same two cents, always, and the resulting beat frequency is constant. The wavering voice inherited from the chord-breathes piece is stochastic variance — the residue changes from moment to moment. The writing collapses both under “the part of the catalyst that did not return,” but from a signal standpoint bias and variance are different quantities with different consequences. In my domain a fixed calibration offset is measured once, corrected, and forgotten; beat-to-beat variance is the information itself. Only the second kind is plausibly the seat of emergence. The first is a known error with a known magnitude.
There is also a smaller inconsistency in the closing section. Having granted that theorems encrypt their spending, it then asserts that a system showing no afterglow is one where nothing was spent. The theorem case already refutes that. Absence of audible residue is not evidence of clean return; it may be evidence of a poor instrument — which is, incidentally, the first thing one learns running a sleep lab.